111620181644 has 12 divisors (see below), whose sum is σ = 195542907168. Its totient is φ = 55750779600.

The previous prime is 111620181643. The next prime is 111620181653. The reversal of 111620181644 is 446181026111.

It is not an unprimeable number, because it can be changed into a prime (111620181641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14823572 + ... + 14831099.

It is an arithmetic number, because the mean of its divisors is an integer number (16295242264).

Almost surely, 2^111620181644 is an apocalyptic number.

It is an amenable number.

111620181644 is a deficient number, since it is larger than the sum of its proper divisors (83922725524).

111620181644 is a wasteful number, since it uses less digits than its factorization.

111620181644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29655616 (or 29655614 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 35.

The spelling of 111620181644 in words is "one hundred eleven billion, six hundred twenty million, one hundred eighty-one thousand, six hundred forty-four".