66714790158432 has 240 divisors, whose sum is σ = 211544075191680. Its totient is φ = 20503832444928.

The previous prime is 66714790158421. The next prime is 66714790158433. The reversal of 66714790158432 is 23485109741766.

66714790158432 is a `hidden beast` number, since 6 + 6 + 7 + 1 + 47 + 9 + 0 + 1 + 584 + 3 + 2 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 66714790158432.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66714790158433) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 27932544 + ... + 30226752.

It is an arithmetic number, because the mean of its divisors is an integer number (881433646632).

It is a 1-persistent number, because it is pandigital, but 2⋅66714790158432 = 133429580316864 is not.

Almost surely, 2^{66714790158432} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66714790158432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105772037595840).

66714790158432 is an abundant number, since it is smaller than the sum of its proper divisors (144829285033248).

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

66714790158432 is a wasteful number, since it uses less digits than its factorization.

66714790158432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2295107 (or 2295090 counting only the distinct ones).

The product of its (nonzero) digits is 60963840, while the sum is 63.

The spelling of 66714790158432 in words is "sixty-six trillion, seven hundred fourteen billion, seven hundred ninety million, one hundred fifty-eight thousand, four hundred thirty-two".