11640026920 has 64 divisors (see below), whose sum is σ = 26415849600. Its totient is φ = 4616021760.

The previous prime is 11640026851. The next prime is 11640026929. The reversal of 11640026920 is 2962004611.

It is not an unprimeable number, because it can be changed into a prime (11640026929) 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, 2810211 + ... + 2814349.

It is an arithmetic number, because the mean of its divisors is an integer number (412747650).

Almost surely, 2^11640026920 is an apocalyptic number.

11640026920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11640026920 is an abundant number, since it is smaller than the sum of its proper divisors (14775822680).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11640026920 is a wasteful number, since it uses less digits than its factorization.

11640026920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4738 (or 4734 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The spelling of 11640026920 in words is "eleven billion, six hundred forty million, twenty-six thousand, nine hundred twenty".