453875656021 has 2 divisors, whose sum is σ = 453875656022. Its totient is φ = 453875656020.

The previous prime is 453875656007. The next prime is 453875656081. The reversal of 453875656021 is 120656578354.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 378409522500 + 75466133521 = 615150^2 + 274711^2 .

It is a cyclic number.

It is not a de Polignac number, because 453875656021 - 2²¹ = 453873558869 is a prime.

It is a super-2 number, since 2×453875656021² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 453875656021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (453875656081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 226937828010 + 226937828011.

It is an arithmetic number, because the mean of its divisors is an integer number (226937828011).

Almost surely, 2^453875656021 is an apocalyptic number.

It is an amenable number.

453875656021 is a deficient number, since it is larger than the sum of its proper divisors (1).

453875656021 is an equidigital number, since it uses as much as digits as its factorization.

453875656021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048000, while the sum is 52.

The spelling of 453875656021 in words is "four hundred fifty-three billion, eight hundred seventy-five million, six hundred fifty-six thousand, twenty-one".