66125615372 has 12 divisors (see below), whose sum is σ = 115820199096. Its totient is φ = 33034129920.

The previous prime is 66125615371. The next prime is 66125615383. The reversal of 66125615372 is 27351652166.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (66125615371) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 7164254 + ... + 7173477.

It is an arithmetic number, because the mean of its divisors is an integer number (9651683258).

Almost surely, 2^66125615372 is an apocalyptic number.

It is an amenable number.

66125615372 is a deficient number, since it is larger than the sum of its proper divisors (49694583724).

66125615372 is a wasteful number, since it uses less digits than its factorization.

66125615372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14338888 (or 14338886 counting only the distinct ones).

The product of its digits is 453600, while the sum is 44.

The spelling of 66125615372 in words is "sixty-six billion, one hundred twenty-five million, six hundred fifteen thousand, three hundred seventy-two".