1155116831420 has 96 divisors (see below), whose sum is σ = 2520842204160. Its totient is φ = 444287312640.

The previous prime is 1155116831383. The next prime is 1155116831431. The reversal of 1155116831420 is 241386115511.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 111524882 + ... + 111535238.

It is an arithmetic number, because the mean of its divisors is an integer number (26258772960).

Almost surely, 2^{1155116831420} is an apocalyptic number.

1155116831420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1155116831420 is an abundant number, since it is smaller than the sum of its proper divisors (1365725372740).

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

1155116831420 is a wasteful number, since it uses less digits than its factorization.

1155116831420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12483 (or 12481 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 38.

The spelling of 1155116831420 in words is "one trillion, one hundred fifty-five billion, one hundred sixteen million, eight hundred thirty-one thousand, four hundred twenty".