90802623469 has 2 divisors, whose sum is σ = 90802623470. Its totient is φ = 90802623468.

The previous prime is 90802623467. The next prime is 90802623523. The reversal of 90802623469 is 96432620809.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52343491369 + 38459132100 = 228787^2 + 196110^2 .

It is a cyclic number.

It is not a de Polignac number, because 90802623469 - 2¹ = 90802623467 is a prime.

It is a super-2 number, since 2×90802623469² (a number of 23 digits) contains 22 as substring.

Together with 90802623467, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90802623467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45401311734 + 45401311735.

It is an arithmetic number, because the mean of its divisors is an integer number (45401311735).

Almost surely, 2^90802623469 is an apocalyptic number.

It is an amenable number.

90802623469 is a deficient number, since it is larger than the sum of its proper divisors (1).

90802623469 is an equidigital number, since it uses as much as digits as its factorization.

90802623469 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1119744, while the sum is 49.

The spelling of 90802623469 in words is "ninety billion, eight hundred two million, six hundred twenty-three thousand, four hundred sixty-nine".