51090972964 has 24 divisors (see below), whose sum is σ = 91020699000. Its totient is φ = 25088912640.

The previous prime is 51090972949. The next prime is 51090972979. The reversal of 51090972964 is 46927909015.

It is an interprime number because it is at equal distance from previous prime (51090972949) and next prime (51090972979).

It can be written as a sum of positive squares in 4 ways, for example, as 11356900 + 51079616064 = 3370^2 + 226008^2 .

It is a super-2 number, since 2×51090972964² (a number of 22 digits) contains 22 as substring.

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, 428547 + ... + 534634.

It is an arithmetic number, because the mean of its divisors is an integer number (3792529125).

Almost surely, 2^51090972964 is an apocalyptic number.

It is an amenable number.

51090972964 is a deficient number, since it is larger than the sum of its proper divisors (39929726036).

51090972964 is a wasteful number, since it uses less digits than its factorization.

51090972964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 963423 (or 963421 counting only the distinct ones).

The product of its (nonzero) digits is 1224720, while the sum is 52.

The spelling of 51090972964 in words is "fifty-one billion, ninety million, nine hundred seventy-two thousand, nine hundred sixty-four".