90944918699 has 2 divisors, whose sum is σ = 90944918700. Its totient is φ = 90944918698.

The previous prime is 90944918681. The next prime is 90944918803. The reversal of 90944918699 is 99681944909.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 90944918699 - 2⁸ = 90944918443 is a prime.

It is not a weakly prime, because it can be changed into another prime (90944918399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45472459349 + 45472459350.

It is an arithmetic number, because the mean of its divisors is an integer number (45472459350).

Almost surely, 2^90944918699 is an apocalyptic number.

90944918699 is a deficient number, since it is larger than the sum of its proper divisors (1).

90944918699 is an equidigital number, since it uses as much as digits as its factorization.

90944918699 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45349632, while the sum is 68.

The spelling of 90944918699 in words is "ninety billion, nine hundred forty-four million, nine hundred eighteen thousand, six hundred ninety-nine".