404845088261 has 2 divisors, whose sum is σ = 404845088262. Its totient is φ = 404845088260.

The previous prime is 404845088209. The next prime is 404845088273. The reversal of 404845088261 is 162880548404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 245000250625 + 159844837636 = 494975^2 + 399806^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-404845088261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (404845088281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202422544130 + 202422544131.

It is an arithmetic number, because the mean of its divisors is an integer number (202422544131).

Almost surely, 2^404845088261 is an apocalyptic number.

It is an amenable number.

404845088261 is a deficient number, since it is larger than the sum of its proper divisors (1).

404845088261 is an equidigital number, since it uses as much as digits as its factorization.

404845088261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1966080, while the sum is 50.

The spelling of 404845088261 in words is "four hundred four billion, eight hundred forty-five million, eighty-eight thousand, two hundred sixty-one".