90691042206 has 32 divisors (see below), whose sum is σ = 184376441088. Its totient is φ = 29735112960.

The previous prime is 90691042201. The next prime is 90691042223. The reversal of 90691042206 is 60224019609.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90691042201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 383130 + ... + 572861.

It is an arithmetic number, because the mean of its divisors is an integer number (5761763784).

Almost surely, 2^90691042206 is an apocalyptic number.

90691042206 is an abundant number, since it is smaller than the sum of its proper divisors (93685398882).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

90691042206 is a wasteful number, since it uses less digits than its factorization.

90691042206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 956256.

The product of its (nonzero) digits is 46656, while the sum is 39.

The spelling of 90691042206 in words is "ninety billion, six hundred ninety-one million, forty-two thousand, two hundred six".