51611600651 has 16 divisors (see below), whose sum is σ = 58021427520. Its totient is φ = 45551953920.

The previous prime is 51611600617. The next prime is 51611600659. The reversal of 51611600651 is 15600611615.

It is a cyclic number.

It is not a de Polignac number, because 51611600651 - 2⁶ = 51611600587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51611600659) 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 15 ways as a sum of consecutive naturals, for example, 747011 + ... + 813171.

It is an arithmetic number, because the mean of its divisors is an integer number (3626339220).

Almost surely, 2^51611600651 is an apocalyptic number.

51611600651 is a deficient number, since it is larger than the sum of its proper divisors (6409826869).

51611600651 is a wasteful number, since it uses less digits than its factorization.

51611600651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68806.

The product of its (nonzero) digits is 5400, while the sum is 32.

The spelling of 51611600651 in words is "fifty-one billion, six hundred eleven million, six hundred thousand, six hundred fifty-one".