90860691088 has 10 divisors (see below), whose sum is σ = 176042589014. Its totient is φ = 45430345536.

The previous prime is 90860691083. The next prime is 90860691137. The reversal of 90860691088 is 88019606809.

It can be written as a sum of positive squares in only one way, i.e., 78328336384 + 12532354704 = 279872^2 + 111948^2 .

It is not an unprimeable number, because it can be changed into a prime (90860691083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2839396581 + ... + 2839396612.

Almost surely, 2^90860691088 is an apocalyptic number.

It is an amenable number.

90860691088 is a deficient number, since it is larger than the sum of its proper divisors (85181897926).

90860691088 is a wasteful number, since it uses less digits than its factorization.

90860691088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5678793201 (or 5678793195 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 55.

The spelling of 90860691088 in words is "ninety billion, eight hundred sixty million, six hundred ninety-one thousand, eighty-eight".