111660663806152 has 8 divisors (see below), whose sum is σ = 209363744636550. Its totient is φ = 55830331903072.

The previous prime is 111660663806077. The next prime is 111660663806161. The reversal of 111660663806152 is 251608366066111.

It can be written as a sum of positive squares in only one way, i.e., 107949315497956 + 3711348308196 = 10389866^2 + 1926486^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 111660663806152.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6978791487877 + ... + 6978791487892.

Almost surely, 2^{111660663806152} is an apocalyptic number.

It is an amenable number.

111660663806152 is a deficient number, since it is larger than the sum of its proper divisors (97703080830398).

111660663806152 is a wasteful number, since it uses less digits than its factorization.

111660663806152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13957582975775 (or 13957582975771 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 52.

The spelling of 111660663806152 in words is "one hundred eleven trillion, six hundred sixty billion, six hundred sixty-three million, eight hundred six thousand, one hundred fifty-two".