66126120372 has 72 divisors (see below), whose sum is σ = 180042087680. Its totient is φ = 20342871360.

The previous prime is 66126120371. The next prime is 66126120419. The reversal of 66126120372 is 27302162166.

66126120372 is a `hidden beast` number, since 6 + 6 + 1 + 2 + 612 + 0 + 37 + 2 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66126120371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3937329 + ... + 3954087.

Almost surely, 2^66126120372 is an apocalyptic number.

It is an amenable number.

66126120372 is an abundant number, since it is smaller than the sum of its proper divisors (113915967308).

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

66126120372 is a wasteful number, since it uses less digits than its factorization.

66126120372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25213 (or 25208 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The spelling of 66126120372 in words is "sixty-six billion, one hundred twenty-six million, one hundred twenty thousand, three hundred seventy-two".