51611015601 has 12 divisors (see below), whose sum is σ = 76954059520. Its totient is φ = 33297429240.

The previous prime is 51611015557. The next prime is 51611015609. The reversal of 51611015601 is 10651011615.

51611015601 is a `hidden beast` number, since 51 + 6 + 1 + 1 + 0 + 1 + 5 + 601 = 666.

It is not a de Polignac number, because 51611015601 - 2¹⁴ = 51610999217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51611015609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 92492581 + ... + 92493138.

Almost surely, 2^51611015601 is an apocalyptic number.

It is an amenable number.

51611015601 is a deficient number, since it is larger than the sum of its proper divisors (25343043919).

51611015601 is a wasteful number, since it uses less digits than its factorization.

51611015601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184985756 (or 184985753 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 27.

The spelling of 51611015601 in words is "fifty-one billion, six hundred eleven million, fifteen thousand, six hundred one".