1131320778924 has 48 divisors (see below), whose sum is σ = 3027151911168. Its totient is φ = 322131311808.

The previous prime is 1131320778923. The next prime is 1131320778943. The reversal of 1131320778924 is 4298770231311.

It is not an unprimeable number, because it can be changed into a prime (1131320778923) 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, 22958502 + ... + 23007725.

It is an arithmetic number, because the mean of its divisors is an integer number (63065664816).

Almost surely, 2^{1131320778924} is an apocalyptic number.

1131320778924 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1131320778924 is an abundant number, since it is smaller than the sum of its proper divisors (1895831132244).

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

1131320778924 is a wasteful number, since it uses less digits than its factorization.

1131320778924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45966534 (or 45966532 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 48.

The spelling of 1131320778924 in words is "one trillion, one hundred thirty-one billion, three hundred twenty million, seven hundred seventy-eight thousand, nine hundred twenty-four".