90554272561720 has 32 divisors (see below), whose sum is σ = 222269578107120. Its totient is φ = 32928826385920.

The previous prime is 90554272561451. The next prime is 90554272561747. The reversal of 90554272561720 is 2716527245509.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (55).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102902582017 + ... + 102902582896.

Almost surely, 2^{90554272561720} is an apocalyptic number.

It is an amenable number.

90554272561720 is an abundant number, since it is smaller than the sum of its proper divisors (131715305545400).

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

90554272561720 is a wasteful number, since it uses less digits than its factorization.

90554272561720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205805164935 (or 205805164931 counting only the distinct ones).

The product of its (nonzero) digits is 10584000, while the sum is 55.

The spelling of 90554272561720 in words is "ninety trillion, five hundred fifty-four billion, two hundred seventy-two million, five hundred sixty-one thousand, seven hundred twenty".