66125756628201 has 32 divisors (see below), whose sum is σ = 91478718542848. Its totient is φ = 42453187162560.

The previous prime is 66125756628091. The next prime is 66125756628223. The reversal of 66125756628201 is 10282665752166.

It is not a de Polignac number, because 66125756628201 - 2²⁵ = 66125723073769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66125756628241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19796466 + ... + 22894356.

It is an arithmetic number, because the mean of its divisors is an integer number (2858709954464).

Almost surely, 2^{66125756628201} is an apocalyptic number.

It is an amenable number.

66125756628201 is a deficient number, since it is larger than the sum of its proper divisors (25352961914647).

66125756628201 is a wasteful number, since it uses less digits than its factorization.

66125756628201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3099901.

The product of its (nonzero) digits is 14515200, while the sum is 57.

The spelling of 66125756628201 in words is "sixty-six trillion, one hundred twenty-five billion, seven hundred fifty-six million, six hundred twenty-eight thousand, two hundred one".