64642300453 has 4 divisors (see below), whose sum is σ = 64643152288. Its totient is φ = 64641448620.

The previous prime is 64642300439. The next prime is 64642300537. The reversal of 64642300453 is 35400324646.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 64642300453 - 2⁵ = 64642300421 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 (64642000453) 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, 299601 + ... + 468022.

It is an arithmetic number, because the mean of its divisors is an integer number (16160788072).

Almost surely, 2^64642300453 is an apocalyptic number.

It is an amenable number.

64642300453 is a deficient number, since it is larger than the sum of its proper divisors (851835).

64642300453 is an equidigital number, since it uses as much as digits as its factorization.

64642300453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 851834.

The product of its (nonzero) digits is 207360, while the sum is 37.

The spelling of 64642300453 in words is "sixty-four billion, six hundred forty-two million, three hundred thousand, four hundred fifty-three".