111660663506154 has 48 divisors (see below), whose sum is σ = 259786748559168. Its totient is φ = 31902457644288.

The previous prime is 111660663506153. The next prime is 111660663506167. The reversal of 111660663506154 is 451605366066111.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 111660663506097 and 111660663506106.

It is not an unprimeable number, because it can be changed into a prime (111660663506153) 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, 12568314 + ... + 19526490.

It is an arithmetic number, because the mean of its divisors is an integer number (5412223928316).

Almost surely, 2^{111660663506154} is an apocalyptic number.

111660663506154 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

111660663506154 is an abundant number, since it is smaller than the sum of its proper divisors (148126085053014).

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

111660663506154 is a wasteful number, since it uses less digits than its factorization.

111660663506154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7012779 (or 7012772 counting only the distinct ones).

The product of its (nonzero) digits is 2332800, while the sum is 51.

The spelling of 111660663506154 in words is "one hundred eleven trillion, six hundred sixty billion, six hundred sixty-three million, five hundred six thousand, one hundred fifty-four".