90981026319 has 16 divisors (see below), whose sum is σ = 123214814720. Its totient is φ = 59705268480.

The previous prime is 90981026291. The next prime is 90981026321. The reversal of 90981026319 is 91362018909.

It is a de Polignac number, because none of the positive numbers 2^k-90981026319 is a prime.

It is a super-2 number, since 2×90981026319² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90981026119) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 501442 + ... + 658335.

It is an arithmetic number, because the mean of its divisors is an integer number (7700925920).

Almost surely, 2^90981026319 is an apocalyptic number.

90981026319 is a deficient number, since it is larger than the sum of its proper divisors (32233788401).

90981026319 is a wasteful number, since it uses less digits than its factorization.

90981026319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1160190.

The product of its (nonzero) digits is 209952, while the sum is 48.

The spelling of 90981026319 in words is "ninety billion, nine hundred eighty-one million, twenty-six thousand, three hundred nineteen".