66474553200 has 120 divisors (see below), whose sum is σ = 232298393856. Its totient is φ = 16115040000.

The previous prime is 66474553177. The next prime is 66474553231. The reversal of 66474553200 is 235547466.

It is a tau number, because it is divible by the number of its divisors (120).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2504776 + ... + 2531175.

Almost surely, 2^66474553200 is an apocalyptic number.

66474553200 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

66474553200 is an abundant number, since it is smaller than the sum of its proper divisors (165823840656).

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

66474553200 is a wasteful number, since it uses less digits than its factorization.

66474553200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5035983 (or 5035972 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 42.

The spelling of 66474553200 in words is "sixty-six billion, four hundred seventy-four million, five hundred fifty-three thousand, two hundred".