10111537920 has 144 divisors (see below), whose sum is σ = 35229664512. Its totient is φ = 2451271680.

The previous prime is 10111537901. The next prime is 10111537951. The reversal of 10111537920 is 2973511101.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77452 + ... + 161931.

It is an arithmetic number, because the mean of its divisors is an integer number (244650448).

Almost surely, 2^10111537920 is an apocalyptic number.

10111537920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10111537920 is an abundant number, since it is smaller than the sum of its proper divisors (25118126592).

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

10111537920 is a wasteful number, since it uses less digits than its factorization.

10111537920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239418 (or 239404 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 30.

The spelling of 10111537920 in words is "ten billion, one hundred eleven million, five hundred thirty-seven thousand, nine hundred twenty".