66246600624 has 80 divisors (see below), whose sum is σ = 171911270784. Its totient is φ = 21982464000.

The previous prime is 66246600619. The next prime is 66246600649. The reversal of 66246600624 is 42600664266.

It is a super-2 number, since 2×66246600624² (a number of 22 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

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, 19708704 + ... + 19712064.

Almost surely, 2^66246600624 is an apocalyptic number.

It is an amenable number.

66246600624 is an abundant number, since it is smaller than the sum of its proper divisors (105664670160).

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

66246600624 is a wasteful number, since it uses less digits than its factorization.

66246600624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5106 (or 5100 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 42.

The spelling of 66246600624 in words is "sixty-six billion, two hundred forty-six million, six hundred thousand, six hundred twenty-four".