90944918783 has 4 divisors (see below), whose sum is σ = 91017155880. Its totient is φ = 90872681688.

The previous prime is 90944918699. The next prime is 90944918803. The reversal of 90944918783 is 38781944909.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 90944918783 - 2¹⁰ = 90944917759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90944915783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36116660 + ... + 36119177.

It is an arithmetic number, because the mean of its divisors is an integer number (22754288970).

Almost surely, 2^90944918783 is an apocalyptic number.

90944918783 is a deficient number, since it is larger than the sum of its proper divisors (72237097).

90944918783 is a wasteful number, since it uses less digits than its factorization.

90944918783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72237096.

The product of its (nonzero) digits is 15676416, while the sum is 62.

The spelling of 90944918783 in words is "ninety billion, nine hundred forty-four million, nine hundred eighteen thousand, seven hundred eighty-three".