51640525110 has 32 divisors (see below), whose sum is σ = 125095560192. Its totient is φ = 13642106720.

The previous prime is 51640525109. The next prime is 51640525151. The reversal of 51640525110 is 1152504615.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8040486 + ... + 8046905.

It is an arithmetic number, because the mean of its divisors is an integer number (3909236256).

Almost surely, 2^51640525110 is an apocalyptic number.

51640525110 is an abundant number, since it is smaller than the sum of its proper divisors (73455035082).

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

51640525110 is a wasteful number, since it uses less digits than its factorization.

51640525110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16087508.

The product of its (nonzero) digits is 6000, while the sum is 30.

The spelling of 51640525110 in words is "fifty-one billion, six hundred forty million, five hundred twenty-five thousand, one hundred ten".