10156661513 has 2 divisors, whose sum is σ = 10156661514. Its totient is φ = 10156661512.

The previous prime is 10156661479. The next prime is 10156661531. The reversal of 10156661513 is 31516665101.

Together with next prime (10156661531) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8890226944 + 1266434569 = 94288^2 + 35587^2 .

It is a cyclic number.

It is not a de Polignac number, because 10156661513 - 2²⁴ = 10139884297 is a prime.

It is not a weakly prime, because it can be changed into another prime (10156661813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5078330756 + 5078330757.

It is an arithmetic number, because the mean of its divisors is an integer number (5078330757).

Almost surely, 2^10156661513 is an apocalyptic number.

It is an amenable number.

10156661513 is a deficient number, since it is larger than the sum of its proper divisors (1).

10156661513 is an equidigital number, since it uses as much as digits as its factorization.

10156661513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16200, while the sum is 35.

The spelling of 10156661513 in words is "ten billion, one hundred fifty-six million, six hundred sixty-one thousand, five hundred thirteen".