51293037906 has 96 divisors (see below), whose sum is σ = 131736084480. Its totient is φ = 14250232800.

The previous prime is 51293037899. The next prime is 51293037907. The reversal of 51293037906 is 60973039215.

It is not an unprimeable number, because it can be changed into a prime (51293037907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 103290 + ... + 336533.

It is an arithmetic number, because the mean of its divisors is an integer number (1372250880).

Almost surely, 2^51293037906 is an apocalyptic number.

51293037906 is an abundant number, since it is smaller than the sum of its proper divisors (80443046574).

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

51293037906 is a wasteful number, since it uses less digits than its factorization.

51293037906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439892 (or 439889 counting only the distinct ones).

The product of its (nonzero) digits is 306180, while the sum is 45.

The spelling of 51293037906 in words is "fifty-one billion, two hundred ninety-three million, thirty-seven thousand, nine hundred six".