456513430021 has 4 divisors (see below), whose sum is σ = 498014650944. Its totient is φ = 415012209100.

The previous prime is 456513430013. The next prime is 456513430117. The reversal of 456513430021 is 120034315654.

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 456513430021 - 2³ = 456513430013 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 (456513430001) 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, 20750610445 + ... + 20750610466.

It is an arithmetic number, because the mean of its divisors is an integer number (124503662736).

Almost surely, 2^456513430021 is an apocalyptic number.

It is an amenable number.

456513430021 is a deficient number, since it is larger than the sum of its proper divisors (41501220923).

456513430021 is a wasteful number, since it uses less digits than its factorization.

456513430021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41501220922.

The product of its (nonzero) digits is 43200, while the sum is 34.

Adding to 456513430021 its reverse (120034315654), we get a palindrome (576547745675).

The spelling of 456513430021 in words is "four hundred fifty-six billion, five hundred thirteen million, four hundred thirty thousand, twenty-one".