90718370213 has 2 divisors, whose sum is σ = 90718370214. Its totient is φ = 90718370212.

The previous prime is 90718370201. The next prime is 90718370219. The reversal of 90718370213 is 31207381709.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 81511392004 + 9206978209 = 285502^2 + 95953^2 .

It is a cyclic number.

It is not a de Polignac number, because 90718370213 - 2²⁰ = 90717321637 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90718370219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45359185106 + 45359185107.

It is an arithmetic number, because the mean of its divisors is an integer number (45359185107).

Almost surely, 2^90718370213 is an apocalyptic number.

It is an amenable number.

90718370213 is a deficient number, since it is larger than the sum of its proper divisors (1).

90718370213 is an equidigital number, since it uses as much as digits as its factorization.

90718370213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 63504, while the sum is 41.

The spelling of 90718370213 in words is "ninety billion, seven hundred eighteen million, three hundred seventy thousand, two hundred thirteen".