16961258731 has 2 divisors, whose sum is σ = 16961258732. Its totient is φ = 16961258730.

The previous prime is 16961258729. The next prime is 16961258857. The reversal of 16961258731 is 13785216961.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16961258731 - 2¹ = 16961258729 is a prime.

It is a super-2 number, since 2×16961258731² (a number of 21 digits) contains 22 as substring.

Together with 16961258729, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (16961250731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8480629365 + 8480629366.

It is an arithmetic number, because the mean of its divisors is an integer number (8480629366).

Almost surely, 2^16961258731 is an apocalyptic number.

16961258731 is a deficient number, since it is larger than the sum of its proper divisors (1).

16961258731 is an equidigital number, since it uses as much as digits as its factorization.

16961258731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 544320, while the sum is 49.

The spelling of 16961258731 in words is "sixteen billion, nine hundred sixty-one million, two hundred fifty-eight thousand, seven hundred thirty-one".