16157385613 has 2 divisors, whose sum is σ = 16157385614. Its totient is φ = 16157385612.

The previous prime is 16157385593. The next prime is 16157385631. The reversal of 16157385613 is 31658375161.

Together with next prime (16157385631) 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., 14435301609 + 1722084004 = 120147^2 + 41498^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16157385613 is a prime.

It is a super-2 number, since 2×16157385613² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16157385683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8078692806 + 8078692807.

It is an arithmetic number, because the mean of its divisors is an integer number (8078692807).

Almost surely, 2^16157385613 is an apocalyptic number.

It is an amenable number.

16157385613 is a deficient number, since it is larger than the sum of its proper divisors (1).

16157385613 is an equidigital number, since it uses as much as digits as its factorization.

16157385613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 453600, while the sum is 46.

The spelling of 16157385613 in words is "sixteen billion, one hundred fifty-seven million, three hundred eighty-five thousand, six hundred thirteen".