90665425429 has 2 divisors, whose sum is σ = 90665425430. Its totient is φ = 90665425428.

The previous prime is 90665425421. The next prime is 90665425469. The reversal of 90665425429 is 92452456609.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51122114404 + 39543311025 = 226102^2 + 198855^2 .

It is a cyclic number.

It is not a de Polignac number, because 90665425429 - 2³ = 90665425421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90665425421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45332712714 + 45332712715.

It is an arithmetic number, because the mean of its divisors is an integer number (45332712715).

Almost surely, 2^90665425429 is an apocalyptic number.

It is an amenable number.

90665425429 is a deficient number, since it is larger than the sum of its proper divisors (1).

90665425429 is an equidigital number, since it uses as much as digits as its factorization.

90665425429 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4665600, while the sum is 52.

The spelling of 90665425429 in words is "ninety billion, six hundred sixty-five million, four hundred twenty-five thousand, four hundred twenty-nine".