990293560901 has 2 divisors, whose sum is σ = 990293560902. Its totient is φ = 990293560900.

The previous prime is 990293560859. The next prime is 990293560933. The reversal of 990293560901 is 109065392099.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 804940924225 + 185352636676 = 897185^2 + 430526^2 .

It is a cyclic number.

It is not a de Polignac number, because 990293560901 - 2²⁶ = 990226452037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (990293560951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 495146780450 + 495146780451.

It is an arithmetic number, because the mean of its divisors is an integer number (495146780451).

Almost surely, 2^990293560901 is an apocalyptic number.

It is an amenable number.

990293560901 is a deficient number, since it is larger than the sum of its proper divisors (1).

990293560901 is an equidigital number, since it uses as much as digits as its factorization.

990293560901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1180980, while the sum is 53.

The spelling of 990293560901 in words is "nine hundred ninety billion, two hundred ninety-three million, five hundred sixty thousand, nine hundred one".