51611501560636 has 12 divisors (see below), whose sum is σ = 91031309840128. Its totient is φ = 25602555892032.

The previous prime is 51611501560603. The next prime is 51611501560679. The reversal of 51611501560636 is 63606510511615.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50798721501 + ... + 50798722516.

Almost surely, 2^{51611501560636} is an apocalyptic number.

It is an amenable number.

51611501560636 is a deficient number, since it is larger than the sum of its proper divisors (39419808279492).

51611501560636 is a wasteful number, since it uses less digits than its factorization.

51611501560636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101597444148 (or 101597444146 counting only the distinct ones).

The product of its (nonzero) digits is 486000, while the sum is 46.

The spelling of 51611501560636 in words is "fifty-one trillion, six hundred eleven billion, five hundred one million, five hundred sixty thousand, six hundred thirty-six".