51820664502736 has 40 divisors (see below), whose sum is σ = 102908246307840. Its totient is φ = 25270613593344.

The previous prime is 51820664502713. The next prime is 51820664502743. The reversal of 51820664502736 is 63720546602815.

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, 216001261 + ... + 216241036.

It is an arithmetic number, because the mean of its divisors is an integer number (2572706157696).

Almost surely, 2^{51820664502736} is an apocalyptic number.

It is an amenable number.

51820664502736 is a deficient number, since it is larger than the sum of its proper divisors (51087581805104).

51820664502736 is a wasteful number, since it uses less digits than its factorization.

51820664502736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432242491 (or 432242485 counting only the distinct ones).

The product of its (nonzero) digits is 14515200, while the sum is 55.

The spelling of 51820664502736 in words is "fifty-one trillion, eight hundred twenty billion, six hundred sixty-four million, five hundred two thousand, seven hundred thirty-six".