51469031136 has 48 divisors (see below), whose sum is σ = 135146721024. Its totient is φ = 17151199104.

The previous prime is 51469031123. The next prime is 51469031153. The reversal of 51469031136 is 63113096415.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×51469031136² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51469031094 and 51469031103.

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, 248391 + ... + 405753.

It is an arithmetic number, because the mean of its divisors is an integer number (2815556688).

Almost surely, 2^51469031136 is an apocalyptic number.

It is an amenable number.

51469031136 is an abundant number, since it is smaller than the sum of its proper divisors (83677689888).

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

51469031136 is a wasteful number, since it uses less digits than its factorization.

51469031136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160783 (or 160775 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 39.

The spelling of 51469031136 in words is "fifty-one billion, four hundred sixty-nine million, thirty-one thousand, one hundred thirty-six".