453956779221 has 32 divisors (see below), whose sum is σ = 667220761728. Its totient is φ = 272254679040.

The previous prime is 453956779169. The next prime is 453956779223. The reversal of 453956779221 is 122977659354.

It is not a de Polignac number, because 453956779221 - 2¹¹ = 453956777173 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (453956779223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1274781 + ... + 1591533.

It is an arithmetic number, because the mean of its divisors is an integer number (20850648804).

Almost surely, 2^453956779221 is an apocalyptic number.

It is an amenable number.

453956779221 is a deficient number, since it is larger than the sum of its proper divisors (213263982507).

453956779221 is a wasteful number, since it uses less digits than its factorization.

453956779221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317221.

The product of its digits is 28576800, while the sum is 60.

The spelling of 453956779221 in words is "four hundred fifty-three billion, nine hundred fifty-six million, seven hundred seventy-nine thousand, two hundred twenty-one".