1111991362560 has 704 divisors, whose sum is σ = 4300350700800. Its totient is φ = 270856617984.

The previous prime is 1111991362541. The next prime is 1111991362577. The reversal of 1111991362560 is 652631991111.

1111991362560 is a `hidden beast` number, since 1 + 1 + 1 + 1 + 9 + 9 + 13 + 625 + 6 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 174317451 + ... + 174323829.

It is an arithmetic number, because the mean of its divisors is an integer number (6108452700).

Almost surely, 2^{1111991362560} is an apocalyptic number.

1111991362560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1111991362560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2150175350400).

1111991362560 is an abundant number, since it is smaller than the sum of its proper divisors (3188359338240).

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

1111991362560 is a wasteful number, since it uses less digits than its factorization.

1111991362560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6523 (or 6499 counting only the distinct ones).

The product of its (nonzero) digits is 87480, while the sum is 45.

The spelling of 1111991362560 in words is "one trillion, one hundred eleven billion, nine hundred ninety-one million, three hundred sixty-two thousand, five hundred sixty".