1156813508860 has 48 divisors (see below), whose sum is σ = 2481145188480. Its totient is φ = 452852910080.

The previous prime is 1156813508801. The next prime is 1156813508909. The reversal of 1156813508860 is 688053186511.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1156813508798 and 1156813508807.

It is a congruent number.

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, 23589246 + ... + 23638234.

It is an arithmetic number, because the mean of its divisors is an integer number (51690524760).

Almost surely, 2^{1156813508860} is an apocalyptic number.

1156813508860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1156813508860 is an abundant number, since it is smaller than the sum of its proper divisors (1324331679620).

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

1156813508860 is a wasteful number, since it uses less digits than its factorization.

1156813508860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74166 (or 74164 counting only the distinct ones).

The product of its (nonzero) digits is 1382400, while the sum is 52.

The spelling of 1156813508860 in words is "one trillion, one hundred fifty-six billion, eight hundred thirteen million, five hundred eight thousand, eight hundred sixty".