66382902640923 has 16 divisors (see below), whose sum is σ = 100755077527296. Its totient is φ = 38482842110240.

The previous prime is 66382902640921. The next prime is 66382902640939. The reversal of 66382902640923 is 32904620928366.

It is not a de Polignac number, because 66382902640923 - 2¹ = 66382902640921 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66382902640921) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43730501640 + ... + 43730503157.

It is an arithmetic number, because the mean of its divisors is an integer number (6297192345456).

Almost surely, 2^{66382902640923} is an apocalyptic number.

66382902640923 is a deficient number, since it is larger than the sum of its proper divisors (34372174886373).

66382902640923 is a wasteful number, since it uses less digits than its factorization.

66382902640923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87461004834.

The product of its (nonzero) digits is 40310784, while the sum is 60.

The spelling of 66382902640923 in words is "sixty-six trillion, three hundred eighty-two billion, nine hundred two million, six hundred forty thousand, nine hundred twenty-three".