51645342101 has 8 divisors (see below), whose sum is σ = 52763180544. Its totient is φ = 50532814800.

The previous prime is 51645342041. The next prime is 51645342103. The reversal of 51645342101 is 10124354615.

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-51645342101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51645342103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1308125 + ... + 1347026.

It is an arithmetic number, because the mean of its divisors is an integer number (6595397568).

Almost surely, 2^51645342101 is an apocalyptic number.

It is an amenable number.

51645342101 is a deficient number, since it is larger than the sum of its proper divisors (1117838443).

51645342101 is a wasteful number, since it uses less digits than its factorization.

51645342101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2655571.

The product of its (nonzero) digits is 14400, while the sum is 32.

Adding to 51645342101 its reverse (10124354615), we get a palindrome (61769696716).

The spelling of 51645342101 in words is "fifty-one billion, six hundred forty-five million, three hundred forty-two thousand, one hundred one".