51516560611 has 8 divisors (see below), whose sum is σ = 52309224800. Its totient is φ = 50729234688.

The previous prime is 51516560609. The next prime is 51516560617. The reversal of 51516560611 is 11606561515.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51516560611 - 2¹ = 51516560609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51516560617) 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, 1315116 + ... + 1353721.

It is an arithmetic number, because the mean of its divisors is an integer number (6538653100).

Almost surely, 2^51516560611 is an apocalyptic number.

51516560611 is a deficient number, since it is larger than the sum of its proper divisors (792664189).

51516560611 is a wasteful number, since it uses less digits than its factorization.

51516560611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2669133.

The product of its (nonzero) digits is 27000, while the sum is 37.

The spelling of 51516560611 in words is "fifty-one billion, five hundred sixteen million, five hundred sixty thousand, six hundred eleven".