90291544319 has 4 divisors (see below), whose sum is σ = 90303864696. Its totient is φ = 90279223944.

The previous prime is 90291544309. The next prime is 90291544367. The reversal of 90291544319 is 91344519209.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90291544319 is a prime.

It is a super-2 number, since 2×90291544319² (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 (90291544309) 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, 6149189 + ... + 6163854.

It is an arithmetic number, because the mean of its divisors is an integer number (22575966174).

Almost surely, 2^90291544319 is an apocalyptic number.

90291544319 is a deficient number, since it is larger than the sum of its proper divisors (12320377).

90291544319 is a wasteful number, since it uses less digits than its factorization.

90291544319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12320376.

The product of its (nonzero) digits is 349920, while the sum is 47.

The spelling of 90291544319 in words is "ninety billion, two hundred ninety-one million, five hundred forty-four thousand, three hundred nineteen".