464455543021 has 2 divisors, whose sum is σ = 464455543022. Its totient is φ = 464455543020.

The previous prime is 464455543009. The next prime is 464455543067. The reversal of 464455543021 is 120345554464.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 244939867396 + 219515675625 = 494914^2 + 468525^2 .

It is a cyclic number.

It is not a de Polignac number, because 464455543021 - 2⁵ = 464455542989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (464455543081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 232227771510 + 232227771511.

It is an arithmetic number, because the mean of its divisors is an integer number (232227771511).

Almost surely, 2^464455543021 is an apocalyptic number.

It is an amenable number.

464455543021 is a deficient number, since it is larger than the sum of its proper divisors (1).

464455543021 is an equidigital number, since it uses as much as digits as its factorization.

464455543021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152000, while the sum is 43.

The spelling of 464455543021 in words is "four hundred sixty-four billion, four hundred fifty-five million, five hundred forty-three thousand, twenty-one".