51749436084 has 24 divisors (see below), whose sum is σ = 120753464160. Its totient is φ = 17249129184.

The previous prime is 51749436029. The next prime is 51749436097. The reversal of 51749436084 is 48063494715.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 300007 + ... + 439889.

It is an arithmetic number, because the mean of its divisors is an integer number (5031394340).

Almost surely, 2^51749436084 is an apocalyptic number.

It is an amenable number.

51749436084 is an abundant number, since it is smaller than the sum of its proper divisors (69004028076).

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

51749436084 is a wasteful number, since it uses less digits than its factorization.

51749436084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170719 (or 170717 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 51.

The spelling of 51749436084 in words is "fifty-one billion, seven hundred forty-nine million, four hundred thirty-six thousand, eighty-four".