66412122372 has 96 divisors (see below), whose sum is σ = 173444140800. Its totient is φ = 21975376896.

The previous prime is 66412122331. The next prime is 66412122401. The reversal of 66412122372 is 27322121466.

66412122372 is a `hidden beast` number, since 6 + 6 + 412 + 1 + 2 + 237 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8726593 + ... + 8734199.

It is an arithmetic number, because the mean of its divisors is an integer number (1806709800).

Almost surely, 2^66412122372 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 66412122372, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86722070400).

66412122372 is an abundant number, since it is smaller than the sum of its proper divisors (107032018428).

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

66412122372 is a wasteful number, since it uses less digits than its factorization.

66412122372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8202 (or 8194 counting only the distinct ones).

The product of its digits is 48384, while the sum is 36.

The spelling of 66412122372 in words is "sixty-six billion, four hundred twelve million, one hundred twenty-two thousand, three hundred seventy-two".