51849502872 has 16 divisors (see below), whose sum is σ = 129623757240. Its totient is φ = 17283167616.

The previous prime is 51849502867. The next prime is 51849502883. The reversal of 51849502872 is 27820594815.

It is a super-3 number, since 3×51849502872³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1080197953 + ... + 1080198000.

Almost surely, 2^51849502872 is an apocalyptic number.

It is an amenable number.

51849502872 is an abundant number, since it is smaller than the sum of its proper divisors (77774254368).

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

51849502872 is a wasteful number, since it uses less digits than its factorization.

51849502872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2160395962 (or 2160395958 counting only the distinct ones).

The product of its (nonzero) digits is 1612800, while the sum is 51.

The spelling of 51849502872 in words is "fifty-one billion, eight hundred forty-nine million, five hundred two thousand, eight hundred seventy-two".