66412013322375 has 128 divisors (see below), whose sum is σ = 142630127278080. Its totient is φ = 29862075600000.

The previous prime is 66412013322289. The next prime is 66412013322377. The reversal of 66412013322375 is 57322331021466.

It is a happy number.

66412013322375 is a `hidden beast` number, since 6 + 6 + 4 + 120 + 133 + 22 + 375 = 666.

It is not a de Polignac number, because 66412013322375 - 2⁷ = 66412013322247 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 66412013322375.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66412013322377) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 21600601 + ... + 24482850.

It is an arithmetic number, because the mean of its divisors is an integer number (1114297869360).

Almost surely, 2^{66412013322375} is an apocalyptic number.

66412013322375 is an abundant number, since it is smaller than the sum of its proper divisors (76218113955705).

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

66412013322375 is a wasteful number, since it uses less digits than its factorization.

66412013322375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46083543 (or 46083527 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 45.

The spelling of 66412013322375 in words is "sixty-six trillion, four hundred twelve billion, thirteen million, three hundred twenty-two thousand, three hundred seventy-five".