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51908357760001 = 138900137371001
BaseRepresentation
bin10111100110101110110110…
…01110011010010000000001
320210210101112200221222012221
423303113123032122100001
523300431304041310001
6302222211555051041
713635153331635001
oct1363273316322001
9223711480858187
1051908357760001
11155a3235786646
1259a422bba0a81
1322c6c24b60022
14cb654102c001
156003c751b1a1
hex2f35db39a401

51908357760001 has 4 divisors (see below), whose sum is σ = 51908396520004. Its totient is φ = 51908319000000.

The previous prime is 51908357759903. The next prime is 51908357760037. The reversal of 51908357760001 is 10006775380915.

51908357760001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19154758858225 + 32753598901776 = 4376615^2 + 5723076^2 .

It is a cyclic number.

It is not a de Polignac number, because 51908357760001 - 231 = 51906210276353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51908357760071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17296500 + ... + 20074501.

It is an arithmetic number, because the mean of its divisors is an integer number (12977099130001).

Almost surely, 251908357760001 is an apocalyptic number.

It is an amenable number.

51908357760001 is a deficient number, since it is larger than the sum of its proper divisors (38760003).

51908357760001 is a wasteful number, since it uses less digits than its factorization.

51908357760001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38760002.

The product of its (nonzero) digits is 1587600, while the sum is 52.

The spelling of 51908357760001 in words is "fifty-one trillion, nine hundred eight billion, three hundred fifty-seven million, seven hundred sixty thousand, one".

Divisors: 1 1389001 37371001 51908357760001