66948696324 has 36 divisors (see below), whose sum is σ = 178138345840. Its totient is φ = 21141693360.

The previous prime is 66948696323. The next prime is 66948696389. The reversal of 66948696324 is 42369684966.

66948696324 is a `hidden beast` number, since 6 + 69 + 486 + 96 + 3 + 2 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×66948696324² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (66948696323) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48938422 + ... + 48939789.

Almost surely, 2^66948696324 is an apocalyptic number.

It is an amenable number.

66948696324 is an abundant number, since it is smaller than the sum of its proper divisors (111189649516).

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

66948696324 is a wasteful number, since it uses less digits than its factorization.

66948696324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97878240 (or 97878235 counting only the distinct ones).

The product of its digits is 80621568, while the sum is 63.

The spelling of 66948696324 in words is "sixty-six billion, nine hundred forty-eight million, six hundred ninety-six thousand, three hundred twenty-four".