66252653339 has 4 divisors (see below), whose sum is σ = 67502703456. Its totient is φ = 65002603224.

The previous prime is 66252653321. The next prime is 66252653353. The reversal of 66252653339 is 93335625266.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 66252653339 - 2²⁸ = 65984217883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66252653309) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 625024979 + ... + 625025084.

It is an arithmetic number, because the mean of its divisors is an integer number (16875675864).

Almost surely, 2^66252653339 is an apocalyptic number.

66252653339 is a deficient number, since it is larger than the sum of its proper divisors (1250050117).

66252653339 is a wasteful number, since it uses less digits than its factorization.

66252653339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1250050116.

The product of its digits is 5248800, while the sum is 50.

The spelling of 66252653339 in words is "sixty-six billion, two hundred fifty-two million, six hundred fifty-three thousand, three hundred thirty-nine".