51154735551445 has 8 divisors (see below), whose sum is σ = 61445107336536. Its totient is φ = 40884171991296.

The previous prime is 51154735551421. The next prime is 51154735551461. The reversal of 51154735551445 is 54415553745115.

It can be written as a sum of positive squares in 4 ways, for example, as 27367870307761 + 23786865243684 = 5231431^2 + 4877178^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51154735551445 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4952050552 + ... + 4952060881.

It is an arithmetic number, because the mean of its divisors is an integer number (7680638417067).

Almost surely, 2^{51154735551445} is an apocalyptic number.

It is an amenable number.

51154735551445 is a deficient number, since it is larger than the sum of its proper divisors (10290371785091).

51154735551445 is a wasteful number, since it uses less digits than its factorization.

51154735551445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9904112471.

The product of its digits is 21000000, while the sum is 55.

The spelling of 51154735551445 in words is "fifty-one trillion, one hundred fifty-four billion, seven hundred thirty-five million, five hundred fifty-one thousand, four hundred forty-five".