16627192561 has 16 divisors (see below), whose sum is σ = 19349933184. Its totient is φ = 13993668864.

The previous prime is 16627192537. The next prime is 16627192577. The reversal of 16627192561 is 16529172661.

It is not a de Polignac number, because 16627192561 - 2¹⁷ = 16627061489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16627192501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13590 + ... + 182863.

It is an arithmetic number, because the mean of its divisors is an integer number (1209370824).

Almost surely, 2^16627192561 is an apocalyptic number.

It is an amenable number.

16627192561 is a deficient number, since it is larger than the sum of its proper divisors (2722740623).

16627192561 is a wasteful number, since it uses less digits than its factorization.

16627192561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196680.

The product of its digits is 272160, while the sum is 46.

The spelling of 16627192561 in words is "sixteen billion, six hundred twenty-seven million, one hundred ninety-two thousand, five hundred sixty-one".