111640615574621 has 16 divisors (see below), whose sum is σ = 127870298648064. Its totient is φ = 95481194442624.

The previous prime is 111640615574581. The next prime is 111640615574647. The reversal of 111640615574621 is 126475516046111.

It is a cyclic number.

It is not a de Polignac number, because 111640615574621 - 2¹⁴ = 111640615558237 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111640615574621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111640615574671) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 267429371 + ... + 267846503.

It is an arithmetic number, because the mean of its divisors is an integer number (7991893665504).

Almost surely, 2^{111640615574621} is an apocalyptic number.

It is an amenable number.

111640615574621 is a deficient number, since it is larger than the sum of its proper divisors (16229683073443).

111640615574621 is an equidigital number, since it uses as much as digits as its factorization.

111640615574621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501260.

The product of its (nonzero) digits is 1209600, while the sum is 50.

The spelling of 111640615574621 in words is "one hundred eleven trillion, six hundred forty billion, six hundred fifteen million, five hundred seventy-four thousand, six hundred twenty-one".