66426756192 has 72 divisors (see below), whose sum is σ = 188956744704. Its totient is φ = 22135728384.

The previous prime is 66426756191. The next prime is 66426756211. The reversal of 66426756192 is 29165762466.

66426756192 is a `hidden beast` number, since 6 + 6 + 426 + 75 + 61 + 92 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66426756191) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 999718 + ... + 1064090.

It is an arithmetic number, because the mean of its divisors is an integer number (2624399232).

Almost surely, 2^66426756192 is an apocalyptic number.

It is an amenable number.

66426756192 is an abundant number, since it is smaller than the sum of its proper divisors (122529988512).

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

66426756192 is a wasteful number, since it uses less digits than its factorization.

66426756192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67972 (or 67961 counting only the distinct ones).

The product of its digits is 6531840, while the sum is 54.

The spelling of 66426756192 in words is "sixty-six billion, four hundred twenty-six million, seven hundred fifty-six thousand, one hundred ninety-two".