66545622000 has 960 divisors, whose sum is σ = 276804283392. Its totient is φ = 14688000000.

The previous prime is 66545621981. The next prime is 66545622019. The reversal of 66545622000 is 22654566.

It is an interprime number because it is at equal distance from previous prime (66545621981) and next prime (66545622019).

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, 265121875 + ... + 265122125.

Almost surely, 2^66545622000 is an apocalyptic number.

66545622000 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 66545622000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (138402141696).

66545622000 is an abundant number, since it is smaller than the sum of its proper divisors (210258661392).

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

66545622000 is a wasteful number, since it uses less digits than its factorization.

66545622000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407 (or 388 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The spelling of 66545622000 in words is "sixty-six billion, five hundred forty-five million, six hundred twenty-two thousand".