66700373407 has 8 divisors (see below), whose sum is σ = 68126397696. Its totient is φ = 65274635352.

The previous prime is 66700373351. The next prime is 66700373429. The reversal of 66700373407 is 70437300766.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 66700373407 - 2²⁷ = 66566155679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66700373447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 437808 + ... + 570154.

It is an arithmetic number, because the mean of its divisors is an integer number (8515799712).

Almost surely, 2^66700373407 is an apocalyptic number.

66700373407 is a deficient number, since it is larger than the sum of its proper divisors (1426024289).

66700373407 is a wasteful number, since it uses less digits than its factorization.

66700373407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143117.

The product of its (nonzero) digits is 444528, while the sum is 43.

The spelling of 66700373407 in words is "sixty-six billion, seven hundred million, three hundred seventy-three thousand, four hundred seven".