66375876523 has 6 divisors (see below), whose sum is σ = 72958608212. Its totient is φ = 60341705820.

The previous prime is 66375876493. The next prime is 66375876527. The reversal of 66375876523 is 32567857366.

It is not a de Polignac number, because 66375876523 - 2³³ = 57785941931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66375876527) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 274280361 + ... + 274280602.

Almost surely, 2^66375876523 is an apocalyptic number.

66375876523 is a deficient number, since it is larger than the sum of its proper divisors (6582731689).

66375876523 is a wasteful number, since it uses less digits than its factorization.

66375876523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 548560985 (or 548560974 counting only the distinct ones).

The product of its digits is 38102400, while the sum is 58.

The spelling of 66375876523 in words is "sixty-six billion, three hundred seventy-five million, eight hundred seventy-six thousand, five hundred twenty-three".