51166125031 has 32 divisors (see below), whose sum is σ = 63999936000. Its totient is φ = 39911501952.

The previous prime is 51166125011. The next prime is 51166125047. The reversal of 51166125031 is 13052166115.

It is a happy number.

It is not a de Polignac number, because 51166125031 - 2⁹ = 51166124519 is a prime.

It is a super-2 number, since 2×51166125031² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51166124984 and 51166125002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51166125011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 726160 + ... + 793498.

It is an arithmetic number, because the mean of its divisors is an integer number (1999998000).

Almost surely, 2^51166125031 is an apocalyptic number.

51166125031 is a deficient number, since it is larger than the sum of its proper divisors (12833810969).

51166125031 is a wasteful number, since it uses less digits than its factorization.

51166125031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67591.

The product of its (nonzero) digits is 5400, while the sum is 31.

The spelling of 51166125031 in words is "fifty-one billion, one hundred sixty-six million, one hundred twenty-five thousand, thirty-one".