51902064448 has 56 divisors (see below), whose sum is σ = 111019315680. Its totient is φ = 23932423680.

The previous prime is 51902064377. The next prime is 51902064481. The reversal of 51902064448 is 84446020915.

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, 879123 + ... + 936301.

It is an arithmetic number, because the mean of its divisors is an integer number (1982487780).

Almost surely, 2^51902064448 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51902064448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55509657840).

51902064448 is an abundant number, since it is smaller than the sum of its proper divisors (59117251232).

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

51902064448 is a wasteful number, since it uses less digits than its factorization.

51902064448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58295 (or 58285 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 43.

The spelling of 51902064448 in words is "fifty-one billion, nine hundred two million, sixty-four thousand, four hundred forty-eight".