51156351444013 has 2 divisors, whose sum is σ = 51156351444014. Its totient is φ = 51156351444012.

The previous prime is 51156351443963. The next prime is 51156351444041. The reversal of 51156351444013 is 31044415365115.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44535909231529 + 6620442212484 = 6673523^2 + 2573022^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51156351444013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51156351484013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25578175722006 + 25578175722007.

It is an arithmetic number, because the mean of its divisors is an integer number (25578175722007).

Almost surely, 2^{51156351444013} is an apocalyptic number.

It is an amenable number.

51156351444013 is a deficient number, since it is larger than the sum of its proper divisors (1).

51156351444013 is an equidigital number, since it uses as much as digits as its factorization.

51156351444013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432000, while the sum is 43.

The spelling of 51156351444013 in words is "fifty-one trillion, one hundred fifty-six billion, three hundred fifty-one million, four hundred forty-four thousand, thirteen".