65857677427 has 4 divisors (see below), whose sum is σ = 65858745856. Its totient is φ = 65856609000.

The previous prime is 65857677401. The next prime is 65857677433. The reversal of 65857677427 is 72477675856.

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 65857677427 - 2²⁷ = 65723459699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65857677467) 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, 435699 + ... + 567052.

It is an arithmetic number, because the mean of its divisors is an integer number (16464686464).

Almost surely, 2^65857677427 is an apocalyptic number.

65857677427 is a deficient number, since it is larger than the sum of its proper divisors (1068429).

65857677427 is a wasteful number, since it uses less digits than its factorization.

65857677427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1068428.

The product of its digits is 138297600, while the sum is 64.

The spelling of 65857677427 in words is "sixty-five billion, eight hundred fifty-seven million, six hundred seventy-seven thousand, four hundred twenty-seven".