51264603240 has 32 divisors (see below), whose sum is σ = 153793810080. Its totient is φ = 13670560832.

The previous prime is 51264603179. The next prime is 51264603241. The reversal of 51264603240 is 4230646215.

It is not an unprimeable number, because it can be changed into a prime (51264603241) 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, 213602394 + ... + 213602633.

It is an arithmetic number, because the mean of its divisors is an integer number (4806056565).

Almost surely, 2^51264603240 is an apocalyptic number.

It is an amenable number.

51264603240 is an abundant number, since it is smaller than the sum of its proper divisors (102529206840).

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

51264603240 is a wasteful number, since it uses less digits than its factorization.

51264603240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427205041 (or 427205037 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 33.

The spelling of 51264603240 in words is "fifty-one billion, two hundred sixty-four million, six hundred three thousand, two hundred forty".