11883864961 has 16 divisors (see below), whose sum is σ = 12047112000. Its totient is φ = 11722148928.

The previous prime is 11883864947. The next prime is 11883864991. The reversal of 11883864961 is 16946838811.

It is a cyclic number.

It is not a de Polignac number, because 11883864961 - 2⁷ = 11883864833 is a prime.

It is a super-2 number, since 2×11883864961² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11883864991) 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, 18032850 + ... + 18033508.

It is an arithmetic number, because the mean of its divisors is an integer number (752944500).

Almost surely, 2^11883864961 is an apocalyptic number.

It is an amenable number.

11883864961 is a deficient number, since it is larger than the sum of its proper divisors (163247039).

11883864961 is a wasteful number, since it uses less digits than its factorization.

11883864961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1488.

The product of its digits is 1990656, while the sum is 55.

The spelling of 11883864961 in words is "eleven billion, eight hundred eighty-three million, eight hundred sixty-four thousand, nine hundred sixty-one".