51040316009 has 2 divisors, whose sum is σ = 51040316010. Its totient is φ = 51040316008.

The previous prime is 51040315973. The next prime is 51040316021. The reversal of 51040316009 is 90061304015.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49408398400 + 1631917609 = 222280^2 + 40397^2 .

It is a cyclic number.

It is not a de Polignac number, because 51040316009 - 2²⁴ = 51023538793 is a prime.

It is a super-2 number, since 2×51040316009² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (51040316309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25520158004 + 25520158005.

It is an arithmetic number, because the mean of its divisors is an integer number (25520158005).

Almost surely, 2^51040316009 is an apocalyptic number.

It is an amenable number.

51040316009 is a deficient number, since it is larger than the sum of its proper divisors (1).

51040316009 is an equidigital number, since it uses as much as digits as its factorization.

51040316009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 29.

The spelling of 51040316009 in words is "fifty-one billion, forty million, three hundred sixteen thousand, nine".