66072700875 has 32 divisors (see below), whose sum is σ = 114725205504. Its totient is φ = 33706648800.

The previous prime is 66072700873. The next prime is 66072700907. The reversal of 66072700875 is 57800727066.

It is not a de Polignac number, because 66072700875 - 2¹ = 66072700873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66072700873) 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, 3821677 + ... + 3838926.

It is an arithmetic number, because the mean of its divisors is an integer number (3585162672).

Almost surely, 2^66072700875 is an apocalyptic number.

66072700875 is a deficient number, since it is larger than the sum of its proper divisors (48652504629).

66072700875 is a wasteful number, since it uses less digits than its factorization.

66072700875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7660644 (or 7660634 counting only the distinct ones).

The product of its (nonzero) digits is 987840, while the sum is 48.

The spelling of 66072700875 in words is "sixty-six billion, seventy-two million, seven hundred thousand, eight hundred seventy-five".