66306775392 has 192 divisors, whose sum is σ = 227205457920. Its totient is φ = 18547315200.

The previous prime is 66306775363. The next prime is 66306775411. The reversal of 66306775392 is 29357760366.

66306775392 is a `hidden beast` number, since 6 + 6 + 30 + 6 + 77 + 539 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 144784 + ... + 391887.

It is an arithmetic number, because the mean of its divisors is an integer number (1183361760).

Almost surely, 2^66306775392 is an apocalyptic number.

It is an amenable number.

66306775392 is an abundant number, since it is smaller than the sum of its proper divisors (160898682528).

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

66306775392 is a wasteful number, since it uses less digits than its factorization.

66306775392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536714 (or 536700 counting only the distinct ones).

The product of its (nonzero) digits is 8573040, while the sum is 54.

The spelling of 66306775392 in words is "sixty-six billion, three hundred six million, seven hundred seventy-five thousand, three hundred ninety-two".