64425206423 has 4 divisors (see below), whose sum is σ = 65050693968. Its totient is φ = 63799718880.

The previous prime is 64425206411. The next prime is 64425206467. The reversal of 64425206423 is 32460252446.

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 64425206423 - 2⁴ = 64425206407 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 (64425206473) 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, 312743618 + ... + 312743823.

It is an arithmetic number, because the mean of its divisors is an integer number (16262673492).

Almost surely, 2^64425206423 is an apocalyptic number.

64425206423 is a deficient number, since it is larger than the sum of its proper divisors (625487545).

64425206423 is a wasteful number, since it uses less digits than its factorization.

64425206423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 625487544.

The product of its (nonzero) digits is 276480, while the sum is 38.

Adding to 64425206423 its reverse (32460252446), we get a palindrome (96885458869).

The spelling of 64425206423 in words is "sixty-four billion, four hundred twenty-five million, two hundred six thousand, four hundred twenty-three".