90255866271 has 4 divisors (see below), whose sum is σ = 120341155032. Its totient is φ = 60170577512.

The previous prime is 90255866189. The next prime is 90255866287. The reversal of 90255866271 is 17266855209.

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 90255866271 - 2²¹ = 90253769119 is a prime.

It is a super-3 number, since 3×90255866271³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90255866291) 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, 15042644376 + ... + 15042644381.

It is an arithmetic number, because the mean of its divisors is an integer number (30085288758).

Almost surely, 2^90255866271 is an apocalyptic number.

90255866271 is a deficient number, since it is larger than the sum of its proper divisors (30085288761).

90255866271 is a wasteful number, since it uses less digits than its factorization.

90255866271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30085288760.

The product of its (nonzero) digits is 1814400, while the sum is 51.

The spelling of 90255866271 in words is "ninety billion, two hundred fifty-five million, eight hundred sixty-six thousand, two hundred seventy-one".