465266499821 has 2 divisors, whose sum is σ = 465266499822. Its totient is φ = 465266499820.

The previous prime is 465266499787. The next prime is 465266499913. The reversal of 465266499821 is 128994662564.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 271368064900 + 193898434921 = 520930^2 + 440339^2 .

It is a cyclic number.

It is not a de Polignac number, because 465266499821 - 2³⁰ = 464192757997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (465266499721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 232633249910 + 232633249911.

It is an arithmetic number, because the mean of its divisors is an integer number (232633249911).

Almost surely, 2^465266499821 is an apocalyptic number.

It is an amenable number.

465266499821 is a deficient number, since it is larger than the sum of its proper divisors (1).

465266499821 is an equidigital number, since it uses as much as digits as its factorization.

465266499821 is an evil number, because the sum of its binary digits is even.

The product of its digits is 44789760, while the sum is 62.

The spelling of 465266499821 in words is "four hundred sixty-five billion, two hundred sixty-six million, four hundred ninety-nine thousand, eight hundred twenty-one".