51304140523957 has 2 divisors, whose sum is σ = 51304140523958. Its totient is φ = 51304140523956.

The previous prime is 51304140523927. The next prime is 51304140524009. The reversal of 51304140523957 is 75932504140315.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44374263282801 + 6929877241156 = 6661401^2 + 2632466^2 .

It is a cyclic number.

It is not a de Polignac number, because 51304140523957 - 2¹⁹ = 51304139999669 is a prime.

It is a super-2 number, since 2×51304140523957² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51304140523957.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51304140523927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25652070261978 + 25652070261979.

It is an arithmetic number, because the mean of its divisors is an integer number (25652070261979).

Almost surely, 2^{51304140523957} is an apocalyptic number.

It is an amenable number.

51304140523957 is a deficient number, since it is larger than the sum of its proper divisors (1).

51304140523957 is an equidigital number, since it uses as much as digits as its factorization.

51304140523957 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2268000, while the sum is 49.

The spelling of 51304140523957 in words is "fifty-one trillion, three hundred four billion, one hundred forty million, five hundred twenty-three thousand, nine hundred fifty-seven".