90344681171 has 4 divisors (see below), whose sum is σ = 92445720312. Its totient is φ = 88243642032.

The previous prime is 90344681149. The next prime is 90344681233. The reversal of 90344681171 is 17118644309.

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 90344681171 - 2⁶ = 90344681107 is a prime.

It is a super-2 number, since 2×90344681171² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90344681071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1050519506 + ... + 1050519591.

It is an arithmetic number, because the mean of its divisors is an integer number (23111430078).

Almost surely, 2^90344681171 is an apocalyptic number.

90344681171 is a deficient number, since it is larger than the sum of its proper divisors (2101039141).

90344681171 is a wasteful number, since it uses less digits than its factorization.

90344681171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2101039140.

The product of its (nonzero) digits is 145152, while the sum is 44.

The spelling of 90344681171 in words is "ninety billion, three hundred forty-four million, six hundred eighty-one thousand, one hundred seventy-one".