111664427650 has 48 divisors (see below), whose sum is σ = 210824568864. Its totient is φ = 43996135680.

The previous prime is 111664427591. The next prime is 111664427653. The reversal of 111664427650 is 56724466111.

It is a junction number, because it is equal to n+sod(n) for n = 111664427597 and 111664427606.

It is not an unprimeable number, because it can be changed into a prime (111664427653) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1358629 + ... + 1438471.

It is an arithmetic number, because the mean of its divisors is an integer number (4392178518).

Almost surely, 2^111664427650 is an apocalyptic number.

111664427650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

111664427650 is a deficient number, since it is larger than the sum of its proper divisors (99160141214).

111664427650 is a wasteful number, since it uses less digits than its factorization.

111664427650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80275 (or 80270 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 43.

The spelling of 111664427650 in words is "one hundred eleven billion, six hundred sixty-four million, four hundred twenty-seven thousand, six hundred fifty".