66669357264 has 40 divisors (see below), whose sum is σ = 172497105312. Its totient is φ = 22188547200.

The previous prime is 66669357259. The next prime is 66669357269. The reversal of 66669357264 is 46275396666.

66669357264 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (66669357259) and next prime (66669357269).

It is a junction number, because it is equal to n+sod(n) for n = 66669357198 and 66669357207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66669357269) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1049187 + ... + 1110914.

Almost surely, 2^66669357264 is an apocalyptic number.

It is an amenable number.

66669357264 is an abundant number, since it is smaller than the sum of its proper divisors (105827748048).

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

66669357264 is a wasteful number, since it uses less digits than its factorization.

66669357264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2160755 (or 2160749 counting only the distinct ones).

The product of its digits is 58786560, while the sum is 60.

The spelling of 66669357264 in words is "sixty-six billion, six hundred sixty-nine million, three hundred fifty-seven thousand, two hundred sixty-four".