1111365381520 has 40 divisors (see below), whose sum is σ = 2646947068920. Its totient is φ = 433703562240.

The previous prime is 1111365381493. The next prime is 1111365381541. The reversal of 1111365381520 is 251835631111.

It can be written as a sum of positive squares in 4 ways, for example, as 60592776336 + 1050772605184 = 246156^2 + 1025072^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×1111365381520² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1111365381520.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 169412175 + ... + 169418734.

It is an arithmetic number, because the mean of its divisors is an integer number (66173676723).

Almost surely, 2^{1111365381520} is an apocalyptic number.

1111365381520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1111365381520 is an abundant number, since it is smaller than the sum of its proper divisors (1535581687400).

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

1111365381520 is a wasteful number, since it uses less digits than its factorization.

1111365381520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338830963 (or 338830957 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 37.

The spelling of 1111365381520 in words is "one trillion, one hundred eleven billion, three hundred sixty-five million, three hundred eighty-one thousand, five hundred twenty".