90219757227 has 8 divisors (see below), whose sum is σ = 123090521664. Its totient is φ = 58747748808.

The previous prime is 90219757213. The next prime is 90219757237. The reversal of 90219757227 is 72275791209.

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

It is not a de Polignac number, because 90219757227 - 2⁴ = 90219757211 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 90219757227.

It is not an unprimeable number, because it can be changed into a prime (90219757237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 349688853 + ... + 349689110.

It is an arithmetic number, because the mean of its divisors is an integer number (15386315208).

Almost surely, 2^90219757227 is an apocalyptic number.

90219757227 is a deficient number, since it is larger than the sum of its proper divisors (32870764437).

90219757227 is a wasteful number, since it uses less digits than its factorization.

90219757227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 699378009.

The product of its (nonzero) digits is 1111320, while the sum is 51.

The spelling of 90219757227 in words is "ninety billion, two hundred nineteen million, seven hundred fifty-seven thousand, two hundred twenty-seven".