51420402516037 has 2 divisors, whose sum is σ = 51420402516038. Its totient is φ = 51420402516036.

The previous prime is 51420402515969. The next prime is 51420402516097. The reversal of 51420402516037 is 73061520402415.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49753964215201 + 1666438300836 = 7053649^2 + 1290906^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51420402516037 is a prime.

It is a super-2 number, since 2×51420402516037² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51420402516097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25710201258018 + 25710201258019.

It is an arithmetic number, because the mean of its divisors is an integer number (25710201258019).

Almost surely, 2^{51420402516037} is an apocalyptic number.

It is an amenable number.

51420402516037 is a deficient number, since it is larger than the sum of its proper divisors (1).

51420402516037 is an equidigital number, since it uses as much as digits as its factorization.

51420402516037 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 201600, while the sum is 40.

The spelling of 51420402516037 in words is "fifty-one trillion, four hundred twenty billion, four hundred two million, five hundred sixteen thousand, thirty-seven".