90883256849018 has 4 divisors (see below), whose sum is σ = 136324885273530. Its totient is φ = 45441628424508.

The previous prime is 90883256848973. The next prime is 90883256849027. The reversal of 90883256849018 is 81094865238809.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 62384454014689 + 28498802834329 = 7898383^2 + 5338427^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22720814212253 + ... + 22720814212256.

Almost surely, 2^{90883256849018} is an apocalyptic number.

90883256849018 is a deficient number, since it is larger than the sum of its proper divisors (45441628424512).

90883256849018 is a wasteful number, since it uses less digits than its factorization.

90883256849018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45441628424511.

The product of its (nonzero) digits is 238878720, while the sum is 71.

The spelling of 90883256849018 in words is "ninety trillion, eight hundred eighty-three billion, two hundred fifty-six million, eight hundred forty-nine thousand, eighteen".