66019320792 has 24 divisors (see below), whose sum is σ = 178802327340. Its totient is φ = 22006440240.

The previous prime is 66019320751. The next prime is 66019320827. The reversal of 66019320792 is 29702391066.

It is a happy number.

66019320792 is a `hidden beast` number, since 6 + 601 + 9 + 32 + 0 + 7 + 9 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 458467434 + ... + 458467577.

Almost surely, 2^66019320792 is an apocalyptic number.

It is an amenable number.

66019320792 is an abundant number, since it is smaller than the sum of its proper divisors (112783006548).

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

66019320792 is a wasteful number, since it uses less digits than its factorization.

66019320792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 916935023 (or 916935016 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 45.

The spelling of 66019320792 in words is "sixty-six billion, nineteen million, three hundred twenty thousand, seven hundred ninety-two".