451587195797 has 4 divisors (see below), whose sum is σ = 456242733996. Its totient is φ = 446931657600.

The previous prime is 451587195791. The next prime is 451587195811. The reversal of 451587195797 is 797591785154.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 290261260081 + 161325935716 = 538759^2 + 401654^2 .

It is a cyclic number.

It is not a de Polignac number, because 451587195797 - 2¹⁴ = 451587179413 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 (451587195791) 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, 2327768954 + ... + 2327769147.

It is an arithmetic number, because the mean of its divisors is an integer number (114060683499).

Almost surely, 2^451587195797 is an apocalyptic number.

It is an amenable number.

451587195797 is a deficient number, since it is larger than the sum of its proper divisors (4655538199).

451587195797 is an equidigital number, since it uses as much as digits as its factorization.

451587195797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4655538198.

The product of its digits is 111132000, while the sum is 68.

The spelling of 451587195797 in words is "four hundred fifty-one billion, five hundred eighty-seven million, one hundred ninety-five thousand, seven hundred ninety-seven".