453421517261 has 2 divisors, whose sum is σ = 453421517262. Its totient is φ = 453421517260.

The previous prime is 453421517249. The next prime is 453421517279. The reversal of 453421517261 is 162715124354.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 403421874025 + 49999643236 = 635155^2 + 223606^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-453421517261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (453421517761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 226710758630 + 226710758631.

It is an arithmetic number, because the mean of its divisors is an integer number (226710758631).

Almost surely, 2^453421517261 is an apocalyptic number.

It is an amenable number.

453421517261 is a deficient number, since it is larger than the sum of its proper divisors (1).

453421517261 is an equidigital number, since it uses as much as digits as its factorization.

453421517261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 201600, while the sum is 41.

The spelling of 453421517261 in words is "four hundred fifty-three billion, four hundred twenty-one million, five hundred seventeen thousand, two hundred sixty-one".