16513946951 has 2 divisors, whose sum is σ = 16513946952. Its totient is φ = 16513946950.

The previous prime is 16513946947. The next prime is 16513946987. The reversal of 16513946951 is 15964931561.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16513946951 - 2² = 16513946947 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16513946951.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16513946921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8256973475 + 8256973476.

It is an arithmetic number, because the mean of its divisors is an integer number (8256973476).

Almost surely, 2^16513946951 is an apocalyptic number.

16513946951 is a deficient number, since it is larger than the sum of its proper divisors (1).

16513946951 is an equidigital number, since it uses as much as digits as its factorization.

16513946951 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 874800, while the sum is 50.

The spelling of 16513946951 in words is "sixteen billion, five hundred thirteen million, nine hundred forty-six thousand, nine hundred fifty-one".