66930553332 has 72 divisors (see below), whose sum is σ = 169681968456. Its totient is φ = 22244834304.

The previous prime is 66930553331. The next prime is 66930553343. The reversal of 66930553332 is 23335503966.

66930553332 is a `hidden beast` number, since 6 + 6 + 9 + 305 + 5 + 3 + 332 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 31693256676 + 35237296656 = 178026^2 + 187716^2 .

It is a super-3 number, since 3×66930553332³ (a number of 33 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66930553331) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22943538 + ... + 22946454.

Almost surely, 2^66930553332 is an apocalyptic number.

It is an amenable number.

66930553332 is an abundant number, since it is smaller than the sum of its proper divisors (102751415124).

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

66930553332 is a wasteful number, since it uses less digits than its factorization.

66930553332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4577 (or 4572 counting only the distinct ones).

The product of its (nonzero) digits is 1312200, while the sum is 45.

The spelling of 66930553332 in words is "sixty-six billion, nine hundred thirty million, five hundred fifty-three thousand, three hundred thirty-two".