8611992672921 has 48 divisors (see below), whose sum is σ = 14285233198080. Its totient is φ = 4944481164000.

The previous prime is 8611992672853. The next prime is 8611992672931. The reversal of 8611992672921 is 1292762991168.

8611992672921 is a `hidden beast` number, since 8 + 611 + 9 + 9 + 2 + 6 + 7 + 2 + 9 + 2 + 1 = 666.

It is not a de Polignac number, because 8611992672921 - 2¹⁷ = 8611992541849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8611992672931) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 53774956 + ... + 53934866.

It is an arithmetic number, because the mean of its divisors is an integer number (297609024960).

Almost surely, 2^{8611992672921} is an apocalyptic number.

It is an amenable number.

8611992672921 is a deficient number, since it is larger than the sum of its proper divisors (5673240525159).

8611992672921 is a wasteful number, since it uses less digits than its factorization.

8611992672921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188578 (or 188575 counting only the distinct ones).

The product of its digits is 11757312, while the sum is 63.

The spelling of 8611992672921 in words is "eight trillion, six hundred eleven billion, nine hundred ninety-two million, six hundred seventy-two thousand, nine hundred twenty-one".