51611562064628 has 24 divisors (see below), whose sum is σ = 90773017360704. Its totient is φ = 25676480894400.

The previous prime is 51611562064627. The next prime is 51611562064637. The reversal of 51611562064628 is 82646026511615.

It is a self number, because there is not a number n which added to its sum of digits gives 51611562064628.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51611562064627) 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, 5230625 + ... + 11427272.

It is an arithmetic number, because the mean of its divisors is an integer number (3782209056696).

Almost surely, 2^{51611562064628} is an apocalyptic number.

It is an amenable number.

51611562064628 is a deficient number, since it is larger than the sum of its proper divisors (39161455296076).

51611562064628 is a wasteful number, since it uses less digits than its factorization.

51611562064628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16661783 (or 16661781 counting only the distinct ones).

The product of its (nonzero) digits is 4147200, while the sum is 53.

The spelling of 51611562064628 in words is "fifty-one trillion, six hundred eleven billion, five hundred sixty-two million, sixty-four thousand, six hundred twenty-eight".