90944918785 has 32 divisors (see below), whose sum is σ = 132401018880. Its totient is φ = 58542830592.

The previous prime is 90944918699. The next prime is 90944918803. The reversal of 90944918785 is 58781944909.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 90944918785 - 2¹¹ = 90944916737 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34992 + ... + 427918.

It is an arithmetic number, because the mean of its divisors is an integer number (4137531840).

Almost surely, 2^90944918785 is an apocalyptic number.

It is an amenable number.

90944918785 is a deficient number, since it is larger than the sum of its proper divisors (41456100095).

90944918785 is a wasteful number, since it uses less digits than its factorization.

90944918785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393345.

The product of its (nonzero) digits is 26127360, while the sum is 64.

The spelling of 90944918785 in words is "ninety billion, nine hundred forty-four million, nine hundred eighteen thousand, seven hundred eighty-five".