90200769017 has 2 divisors, whose sum is σ = 90200769018. Its totient is φ = 90200769016.

The previous prime is 90200768981. The next prime is 90200769023. The reversal of 90200769017 is 71096700209.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 88877919376 + 1322849641 = 298124^2 + 36371^2 .

It is an emirp because it is prime and its reverse (71096700209) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 90200769017 - 2²⁰ = 90199720441 is a prime.

It is not a weakly prime, because it can be changed into another prime (90200769067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45100384508 + 45100384509.

It is an arithmetic number, because the mean of its divisors is an integer number (45100384509).

Almost surely, 2^90200769017 is an apocalyptic number.

It is an amenable number.

90200769017 is a deficient number, since it is larger than the sum of its proper divisors (1).

90200769017 is an equidigital number, since it uses as much as digits as its factorization.

90200769017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 47628, while the sum is 41.

The spelling of 90200769017 in words is "ninety billion, two hundred million, seven hundred sixty-nine thousand, seventeen".