90971227206 has 24 divisors (see below), whose sum is σ = 199479079800. Its totient is φ = 29958395616.

The previous prime is 90971227189. The next prime is 90971227223. The reversal of 90971227206 is 60272217909.

It is an interprime number because it is at equal distance from previous prime (90971227189) and next prime (90971227223).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30444031 + ... + 30447018.

It is an arithmetic number, because the mean of its divisors is an integer number (8311628325).

Almost surely, 2^90971227206 is an apocalyptic number.

90971227206 is an abundant number, since it is smaller than the sum of its proper divisors (108507852594).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

90971227206 is a wasteful number, since it uses less digits than its factorization.

90971227206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60891140 (or 60891137 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 45.

The spelling of 90971227206 in words is "ninety billion, nine hundred seventy-one million, two hundred twenty-seven thousand, two hundred six".