51037840164 has 48 divisors (see below), whose sum is σ = 126122669568. Its totient is φ = 16008165888.

The previous prime is 51037840159. The next prime is 51037840169. The reversal of 51037840164 is 46104873015.

It is an interprime number because it is at equal distance from previous prime (51037840159) and next prime (51037840169).

It is a super-2 number, since 2×51037840164² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51037840169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 932814 + ... + 986010.

It is an arithmetic number, because the mean of its divisors is an integer number (2627555616).

Almost surely, 2^51037840164 is an apocalyptic number.

It is an amenable number.

51037840164 is an abundant number, since it is smaller than the sum of its proper divisors (75084829404).

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

51037840164 is a wasteful number, since it uses less digits than its factorization.

51037840164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57924 (or 57922 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 39.

The spelling of 51037840164 in words is "fifty-one billion, thirty-seven million, eight hundred forty thousand, one hundred sixty-four".