90220295278 has 8 divisors (see below), whose sum is σ = 135363041568. Its totient is φ = 45099281424.

The previous prime is 90220295233. The next prime is 90220295293. The reversal of 90220295278 is 87259202209.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5422726 + ... + 5439337.

It is an arithmetic number, because the mean of its divisors is an integer number (16920380196).

Almost surely, 2^90220295278 is an apocalyptic number.

90220295278 is a deficient number, since it is larger than the sum of its proper divisors (45142746290).

90220295278 is a wasteful number, since it uses less digits than its factorization.

90220295278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10866218.

The product of its (nonzero) digits is 362880, while the sum is 46.

The spelling of 90220295278 in words is "ninety billion, two hundred twenty million, two hundred ninety-five thousand, two hundred seventy-eight".