11938964871 has 8 divisors (see below), whose sum is σ = 15943379200. Its totient is φ = 7946930232.

The previous prime is 11938964839. The next prime is 11938964879. The reversal of 11938964871 is 17846983911.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11938964871 - 2⁵ = 11938964839 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11938964879) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3092671 + ... + 3096528.

It is an arithmetic number, because the mean of its divisors is an integer number (1992922400).

Almost surely, 2^11938964871 is an apocalyptic number.

11938964871 is a deficient number, since it is larger than the sum of its proper divisors (4004414329).

11938964871 is an equidigital number, since it uses as much as digits as its factorization.

11938964871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6189845.

The product of its digits is 2612736, while the sum is 57.

The spelling of 11938964871 in words is "eleven billion, nine hundred thirty-eight million, nine hundred sixty-four thousand, eight hundred seventy-one".