51511565060 has 12 divisors (see below), whose sum is σ = 108174286668. Its totient is φ = 20604626016.

The previous prime is 51511565051. The next prime is 51511565089. The reversal of 51511565060 is 6056511515.

51511565060 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 32595413764 + 18916151296 = 180542^2 + 137536^2 .

It is a super-2 number, since 2×51511565060² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51511565060.

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, 1287789107 + ... + 1287789146.

It is an arithmetic number, because the mean of its divisors is an integer number (9014523889).

Almost surely, 2^51511565060 is an apocalyptic number.

It is an amenable number.

51511565060 is an abundant number, since it is smaller than the sum of its proper divisors (56662721608).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51511565060 is a wasteful number, since it uses less digits than its factorization.

51511565060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2575578262 (or 2575578260 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 35.

The spelling of 51511565060 in words is "fifty-one billion, five hundred eleven million, five hundred sixty-five thousand, sixty".