66000432960 has 1344 divisors, whose sum is σ = 299504185344. Its totient is φ = 13436928000.

The previous prime is 66000432929. The next prime is 66000432991. The reversal of 66000432960 is 6923400066.

66000432960 is a `hidden beast` number, since 6 + 600 + 0 + 43 + 2 + 9 + 6 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (66000432929) and next prime (66000432991).

It is a tau number, because it is divible by the number of its divisors (1344).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 437088885 + ... + 437089035.

It is an arithmetic number, because the mean of its divisors is an integer number (222845376).

Almost surely, 2^66000432960 is an apocalyptic number.

66000432960 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66000432960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (149752092672).

66000432960 is an abundant number, since it is smaller than the sum of its proper divisors (233503752384).

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

66000432960 is a wasteful number, since it uses less digits than its factorization.

66000432960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274 (or 252 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 36.

The spelling of 66000432960 in words is "sixty-six billion, four hundred thirty-two thousand, nine hundred sixty".