90442221501 has 8 divisors (see below), whose sum is σ = 122389474144. Its totient is φ = 59394891600.

The previous prime is 90442221491. The next prime is 90442221517. The reversal of 90442221501 is 10512224409.

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

It is not a de Polignac number, because 90442221501 - 2⁵ = 90442221469 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90442221521) 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, 224980450 + ... + 224980851.

It is an arithmetic number, because the mean of its divisors is an integer number (15298684268).

Almost surely, 2^90442221501 is an apocalyptic number.

It is an amenable number.

90442221501 is a deficient number, since it is larger than the sum of its proper divisors (31947252643).

90442221501 is a wasteful number, since it uses less digits than its factorization.

90442221501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449961371.

The product of its (nonzero) digits is 5760, while the sum is 30.

The spelling of 90442221501 in words is "ninety billion, four hundred forty-two million, two hundred twenty-one thousand, five hundred one".