1115721477536 has 24 divisors (see below), whose sum is σ = 2255943598020. Its totient is φ = 542783420928.

The previous prime is 1115721477509. The next prime is 1115721477547. The reversal of 1115721477536 is 6357741275111.

It can be written as a sum of positive squares in 2 ways, for example, as 968452810000 + 147268667536 = 984100^2 + 383756^2 .

It is a super-2 number, since 2×1115721477536² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 471164981 + ... + 471167348.

Almost surely, 2^{1115721477536} is an apocalyptic number.

1115721477536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1115721477536 is an abundant number, since it is smaller than the sum of its proper divisors (1140222120484).

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

1115721477536 is an equidigital number, since it uses as much as digits as its factorization.

1115721477536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 942332376 (or 942332368 counting only the distinct ones).

The product of its digits is 1234800, while the sum is 50.

The spelling of 1115721477536 in words is "one trillion, one hundred fifteen billion, seven hundred twenty-one million, four hundred seventy-seven thousand, five hundred thirty-six".