90581989914 has 36 divisors (see below), whose sum is σ = 212519291166. Its totient is φ = 27871380576.

The previous prime is 90581989909. The next prime is 90581989919. The reversal of 90581989914 is 41998918509.

It is an interprime number because it is at equal distance from previous prime (90581989909) and next prime (90581989919).

It can be written as a sum of positive squares in 3 ways, for example, as 31423589289 + 59158400625 = 177267^2 + 243225^2 .

It is not an unprimeable number, because it can be changed into a prime (90581989919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 14885517 + ... + 14891600.

Almost surely, 2^90581989914 is an apocalyptic number.

90581989914 is an abundant number, since it is smaller than the sum of its proper divisors (121937301252).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

90581989914 is a wasteful number, since it uses less digits than its factorization.

90581989914 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29777151 (or 29777135 counting only the distinct ones).

The product of its (nonzero) digits is 8398080, while the sum is 63.

The spelling of 90581989914 in words is "ninety billion, five hundred eighty-one million, nine hundred eighty-nine thousand, nine hundred fourteen".