66586481275 has 12 divisors (see below), whose sum is σ = 82995052312. Its totient is φ = 52993175040.

The previous prime is 66586481261. The next prime is 66586481287. The reversal of 66586481275 is 57218468566.

It is a happy number.

It is not a de Polignac number, because 66586481275 - 2²³ = 66578092667 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6895329 + ... + 6904978.

Almost surely, 2^66586481275 is an apocalyptic number.

66586481275 is a deficient number, since it is larger than the sum of its proper divisors (16408571037).

66586481275 is a wasteful number, since it uses less digits than its factorization.

66586481275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13800510 (or 13800505 counting only the distinct ones).

The product of its digits is 19353600, while the sum is 58.

The spelling of 66586481275 in words is "sixty-six billion, five hundred eighty-six million, four hundred eighty-one thousand, two hundred seventy-five".