1099666223880 has 64 divisors (see below), whose sum is σ = 3770284199040. Its totient is φ = 251352279552.

The previous prime is 1099666223857. The next prime is 1099666223893. The reversal of 1099666223880 is 883226669901.

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

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, 654562389 + ... + 654564068.

It is an arithmetic number, because the mean of its divisors is an integer number (58910690610).

Almost surely, 2^{1099666223880} is an apocalyptic number.

1099666223880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1099666223880 is an abundant number, since it is smaller than the sum of its proper divisors (2670617975160).

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

1099666223880 is a wasteful number, since it uses less digits than its factorization.

1099666223880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1309126478 (or 1309126474 counting only the distinct ones).

The product of its (nonzero) digits is 13436928, while the sum is 60.

The spelling of 1099666223880 in words is "one trillion, ninety-nine billion, six hundred sixty-six million, two hundred twenty-three thousand, eight hundred eighty".