90889113745 has 16 divisors (see below), whose sum is σ = 112598627328. Its totient is φ = 70357389120.

The previous prime is 90889113743. The next prime is 90889113839. The reversal of 90889113745 is 54731198809.

It is a happy number.

It is not a de Polignac number, because 90889113745 - 2¹ = 90889113743 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90889113743) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1483867 + ... + 1543903.

It is an arithmetic number, because the mean of its divisors is an integer number (7037414208).

Almost surely, 2^90889113745 is an apocalyptic number.

It is an amenable number.

90889113745 is a deficient number, since it is larger than the sum of its proper divisors (21709513583).

90889113745 is a wasteful number, since it uses less digits than its factorization.

90889113745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69840.

The product of its (nonzero) digits is 2177280, while the sum is 55.

The spelling of 90889113745 in words is "ninety billion, eight hundred eighty-nine million, one hundred thirteen thousand, seven hundred forty-five".