51274871836 has 12 divisors (see below), whose sum is σ = 91424064312. Its totient is φ = 25153710608.

The previous prime is 51274871831. The next prime is 51274871849. The reversal of 51274871836 is 63817847215.

It is a super-2 number, since 2×51274871836² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51274871831) 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 3 ways as a sum of consecutive naturals, for example, 120931090 + ... + 120931513.

It is an arithmetic number, because the mean of its divisors is an integer number (7618672026).

Almost surely, 2^51274871836 is an apocalyptic number.

It is an amenable number.

51274871836 is a deficient number, since it is larger than the sum of its proper divisors (40149192476).

51274871836 is a wasteful number, since it uses less digits than its factorization.

51274871836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241862660 (or 241862658 counting only the distinct ones).

The product of its digits is 2257920, while the sum is 52.

The spelling of 51274871836 in words is "fifty-one billion, two hundred seventy-four million, eight hundred seventy-one thousand, eight hundred thirty-six".