51738852637556 has 48 divisors (see below), whose sum is σ = 104726935756800. Its totient is φ = 21906114555360.

The previous prime is 51738852637529. The next prime is 51738852637559. The reversal of 51738852637556 is 65573625883715.

It is a self number, because there is not a number n which added to its sum of digits gives 51738852637556.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51738852637559) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105727961 + ... + 106216191.

It is an arithmetic number, because the mean of its divisors is an integer number (2181811161600).

Almost surely, 2^{51738852637556} is an apocalyptic number.

It is an amenable number.

51738852637556 is an abundant number, since it is smaller than the sum of its proper divisors (52988083119244).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51738852637556 is a wasteful number, since it uses less digits than its factorization.

51738852637556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 533924 (or 533922 counting only the distinct ones).

The product of its digits is 1270080000, while the sum is 71.

The spelling of 51738852637556 in words is "fifty-one trillion, seven hundred thirty-eight billion, eight hundred fifty-two million, six hundred thirty-seven thousand, five hundred fifty-six".