16161036651 has 10 divisors (see below), whose sum is σ = 24141795612. Its totient is φ = 10774024380.

The previous prime is 16161036611. The next prime is 16161036677. The reversal of 16161036651 is 15663016161.

16161036651 is a `hidden beast` number, since 1 + 6 + 1 + 610 + 36 + 6 + 5 + 1 = 666.

It is not a de Polignac number, because 16161036651 - 2⁷ = 16161036523 is a prime.

It is a super-2 number, since 2×16161036651² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16161036611) 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 in 9 ways as a sum of consecutive naturals, for example, 99759405 + ... + 99759566.

Almost surely, 2^16161036651 is an apocalyptic number.

16161036651 is a deficient number, since it is larger than the sum of its proper divisors (7980758961).

16161036651 is an equidigital number, since it uses as much as digits as its factorization.

16161036651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199518983 (or 199518974 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The spelling of 16161036651 in words is "sixteen billion, one hundred sixty-one million, thirty-six thousand, six hundred fifty-one".