16326566251 has 2 divisors, whose sum is σ = 16326566252. Its totient is φ = 16326566250.

The previous prime is 16326566197. The next prime is 16326566257. The reversal of 16326566251 is 15266562361.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16326566251 - 2³³ = 7736631659 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16326566198 and 16326566207.

It is not a weakly prime, because it can be changed into another prime (16326566257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8163283125 + 8163283126.

It is an arithmetic number, because the mean of its divisors is an integer number (8163283126).

Almost surely, 2^16326566251 is an apocalyptic number.

16326566251 is a deficient number, since it is larger than the sum of its proper divisors (1).

16326566251 is an equidigital number, since it uses as much as digits as its factorization.

16326566251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 388800, while the sum is 43.

The spelling of 16326566251 in words is "sixteen billion, three hundred twenty-six million, five hundred sixty-six thousand, two hundred fifty-one".