66456499033860 has 96 divisors (see below), whose sum is σ = 200414338505472. Its totient is φ = 16356691514880.

The previous prime is 66456499033843. The next prime is 66456499033889. The reversal of 66456499033860 is 6833099465466.

It is a super-2 number, since 2×66456499033860² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2209377 + ... + 11738583.

It is an arithmetic number, because the mean of its divisors is an integer number (2087649359432).

Almost surely, 2^{66456499033860} is an apocalyptic number.

66456499033860 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

66456499033860 is an abundant number, since it is smaller than the sum of its proper divisors (133957839471612).

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

66456499033860 is a wasteful number, since it uses less digits than its factorization.

66456499033860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9538173 (or 9538171 counting only the distinct ones).

The product of its (nonzero) digits is 604661760, while the sum is 69.

The spelling of 66456499033860 in words is "sixty-six trillion, four hundred fifty-six billion, four hundred ninety-nine million, thirty-three thousand, eight hundred sixty".