90995690385 has 40 divisors (see below), whose sum is σ = 163161353256. Its totient is φ = 48518196480.

The previous prime is 90995690333. The next prime is 90995690389. The reversal of 90995690385 is 58309659909.

It can be written as a sum of positive squares in 4 ways, for example, as 30237384321 + 60758306064 = 173889^2 + 246492^2 .

It is not a de Polignac number, because 90995690385 - 2¹⁴ = 90995674001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90995690389) 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 in 39 ways as a sum of consecutive naturals, for example, 1615395 + ... + 1670775.

Almost surely, 2^90995690385 is an apocalyptic number.

It is an amenable number.

90995690385 is a deficient number, since it is larger than the sum of its proper divisors (72165662871).

90995690385 is a wasteful number, since it uses less digits than its factorization.

90995690385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59455 (or 59446 counting only the distinct ones).

The product of its (nonzero) digits is 23619600, while the sum is 63.

The spelling of 90995690385 in words is "ninety billion, nine hundred ninety-five million, six hundred ninety thousand, three hundred eighty-five".