51697496028 has 48 divisors (see below), whose sum is σ = 123648989184. Its totient is φ = 16803564480.

The previous prime is 51697496023. The next prime is 51697496029. The reversal of 51697496028 is 82069479615.

51697496028 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51697496023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16275 + ... + 321962.

It is an arithmetic number, because the mean of its divisors is an integer number (2576020608).

Almost surely, 2^51697496028 is an apocalyptic number.

It is an amenable number.

51697496028 is an abundant number, since it is smaller than the sum of its proper divisors (71951493156).

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

51697496028 is a wasteful number, since it uses less digits than its factorization.

51697496028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338562 (or 338560 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 57.

The spelling of 51697496028 in words is "fifty-one billion, six hundred ninety-seven million, four hundred ninety-six thousand, twenty-eight".