90919101911 has 16 divisors (see below), whose sum is σ = 101978666496. Its totient is φ = 80340120000.

The previous prime is 90919101857. The next prime is 90919101943. The reversal of 90919101911 is 11910191909.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 90919101911 - 2¹⁰ = 90919100887 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90919101991) 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, 249725 + ... + 494166.

It is an arithmetic number, because the mean of its divisors is an integer number (6373666656).

Almost surely, 2^90919101911 is an apocalyptic number.

90919101911 is a deficient number, since it is larger than the sum of its proper divisors (11059564585).

90919101911 is a wasteful number, since it uses less digits than its factorization.

90919101911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 744214.

The product of its (nonzero) digits is 6561, while the sum is 41.

The spelling of 90919101911 in words is "ninety billion, nine hundred nineteen million, one hundred one thousand, nine hundred eleven".