16977569761 has 4 divisors (see below), whose sum is σ = 17715724992. Its totient is φ = 16239414532.

The previous prime is 16977569737. The next prime is 16977569767. The reversal of 16977569761 is 16796577961.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 16977569761 - 2⁷ = 16977569633 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16977569693 and 16977569702.

It is not an unprimeable number, because it can be changed into a prime (16977569767) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 369077581 + ... + 369077626.

It is an arithmetic number, because the mean of its divisors is an integer number (4428931248).

Almost surely, 2^16977569761 is an apocalyptic number.

It is an amenable number.

16977569761 is a deficient number, since it is larger than the sum of its proper divisors (738155231).

16977569761 is an equidigital number, since it uses as much as digits as its factorization.

16977569761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 738155230.

The product of its digits is 30005640, while the sum is 64.

The spelling of 16977569761 in words is "sixteen billion, nine hundred seventy-seven million, five hundred sixty-nine thousand, seven hundred sixty-one".