454320042557 has 2 divisors, whose sum is σ = 454320042558. Its totient is φ = 454320042556.

The previous prime is 454320042499. The next prime is 454320042577. The reversal of 454320042557 is 755240023454.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 453765251641 + 554790916 = 673621^2 + 23554^2 .

It is a cyclic number.

It is not a de Polignac number, because 454320042557 - 2⁸ = 454320042301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (454320042577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 227160021278 + 227160021279.

It is an arithmetic number, because the mean of its divisors is an integer number (227160021279).

Almost surely, 2^454320042557 is an apocalyptic number.

It is an amenable number.

454320042557 is a deficient number, since it is larger than the sum of its proper divisors (1).

454320042557 is an equidigital number, since it uses as much as digits as its factorization.

454320042557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672000, while the sum is 41.

The spelling of 454320042557 in words is "four hundred fifty-four billion, three hundred twenty million, forty-two thousand, five hundred fifty-seven".