51204042500977 has 2 divisors, whose sum is σ = 51204042500978. Its totient is φ = 51204042500976.

The previous prime is 51204042500939. The next prime is 51204042501041. The reversal of 51204042500977 is 77900524040215.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29688211818721 + 21515830682256 = 5448689^2 + 4638516^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51204042500977 is a prime.

It is not a weakly prime, because it can be changed into another prime (51204042500917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25602021250488 + 25602021250489.

It is an arithmetic number, because the mean of its divisors is an integer number (25602021250489).

Almost surely, 2^{51204042500977} is an apocalyptic number.

It is an amenable number.

51204042500977 is a deficient number, since it is larger than the sum of its proper divisors (1).

51204042500977 is an equidigital number, since it uses as much as digits as its factorization.

51204042500977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 705600, while the sum is 46.

The spelling of 51204042500977 in words is "fifty-one trillion, two hundred four billion, forty-two million, five hundred thousand, nine hundred seventy-seven".