51110561064 has 64 divisors (see below), whose sum is σ = 137585822400. Its totient is φ = 15762904064.

The previous prime is 51110561041. The next prime is 51110561069. The reversal of 51110561064 is 46016501115.

51110561064 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×51110561064² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51110561069) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1037547 + ... + 1085690.

It is an arithmetic number, because the mean of its divisors is an integer number (2149778475).

Almost surely, 2^51110561064 is an apocalyptic number.

It is an amenable number.

51110561064 is an abundant number, since it is smaller than the sum of its proper divisors (86475261336).

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

51110561064 is a wasteful number, since it uses less digits than its factorization.

51110561064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2123322 (or 2123318 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 30.

The spelling of 51110561064 in words is "fifty-one billion, one hundred ten million, five hundred sixty-one thousand, sixty-four".