453640921709 has 4 divisors (see below), whose sum is σ = 453913053504. Its totient is φ = 453368789916.

The previous prime is 453640921663. The next prime is 453640921757. The reversal of 453640921709 is 907129046354.

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 453640921709 - 2²⁸ = 453372486253 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 (453640920709) 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, 136063397 + ... + 136066730.

It is an arithmetic number, because the mean of its divisors is an integer number (113478263376).

Almost surely, 2^453640921709 is an apocalyptic number.

It is an amenable number.

453640921709 is a deficient number, since it is larger than the sum of its proper divisors (272131795).

453640921709 is a wasteful number, since it uses less digits than its factorization.

453640921709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272131794.

The product of its (nonzero) digits is 1632960, while the sum is 50.

The spelling of 453640921709 in words is "four hundred fifty-three billion, six hundred forty million, nine hundred twenty-one thousand, seven hundred nine".