51890799285 has 128 divisors (see below), whose sum is σ = 100435507200. Its totient is φ = 25268060160.

The previous prime is 51890799271. The next prime is 51890799293. The reversal of 51890799285 is 58299709815.

51890799285 is a `hidden beast` number, since 518 + 9 + 0 + 7 + 99 + 28 + 5 = 666.

51890799285 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51890799285 - 2⁵ = 51890799253 is a prime.

It is a super-2 number, since 2×51890799285² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 80952565 + ... + 80953205.

It is an arithmetic number, because the mean of its divisors is an integer number (784652400).

Almost surely, 2^51890799285 is an apocalyptic number.

It is an amenable number.

51890799285 is a deficient number, since it is larger than the sum of its proper divisors (48544707915).

51890799285 is a wasteful number, since it uses less digits than its factorization.

51890799285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1100 (or 1094 counting only the distinct ones).

The product of its (nonzero) digits is 16329600, while the sum is 63.

The spelling of 51890799285 in words is "fifty-one billion, eight hundred ninety million, seven hundred ninety-nine thousand, two hundred eighty-five".