451634808979 has 4 divisors (see below), whose sum is σ = 451716528784. Its totient is φ = 451553089176.

The previous prime is 451634808971. The next prime is 451634809009. The reversal of 451634808979 is 979808436154.

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 451634808979 - 2³ = 451634808971 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 451634808979.

It is not an unprimeable number, because it can be changed into a prime (451634808971) 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, 40851612 + ... + 40862665.

It is an arithmetic number, because the mean of its divisors is an integer number (112929132196).

Almost surely, 2^451634808979 is an apocalyptic number.

451634808979 is a deficient number, since it is larger than the sum of its proper divisors (81719805).

451634808979 is an equidigital number, since it uses as much as digits as its factorization.

451634808979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81719804.

The product of its (nonzero) digits is 52254720, while the sum is 64.

The spelling of 451634808979 in words is "four hundred fifty-one billion, six hundred thirty-four million, eight hundred eight thousand, nine hundred seventy-nine".