1188235866660 has 48 divisors (see below), whose sum is σ = 3327113017536. Its totient is φ = 316857889152.

The previous prime is 1188235866613. The next prime is 1188235866737. The reversal of 1188235866660 is 666685328811.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a junction number, because it is equal to n+sod(n) for n = 1188235866594 and 1188235866603.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5167662 + ... + 5392698.

It is an arithmetic number, because the mean of its divisors is an integer number (69314854532).

Almost surely, 2^{1188235866660} is an apocalyptic number.

1188235866660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1188235866660 is an abundant number, since it is smaller than the sum of its proper divisors (2138877150876).

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

1188235866660 is a wasteful number, since it uses less digits than its factorization.

1188235866660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313052 (or 313050 counting only the distinct ones).

The product of its (nonzero) digits is 19906560, while the sum is 60.

The spelling of 1188235866660 in words is "one trillion, one hundred eighty-eight billion, two hundred thirty-five million, eight hundred sixty-six thousand, six hundred sixty".