90691042196 has 12 divisors (see below), whose sum is σ = 168045166548. Its totient is φ = 42678137472.

The previous prime is 90691042163. The next prime is 90691042201. The reversal of 90691042196 is 69124019609.

It can be written as a sum of positive squares in 2 ways, for example, as 33961329796 + 56729712400 = 184286^2 + 238180^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 90691042196.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 666845831 + ... + 666845966.

It is an arithmetic number, because the mean of its divisors is an integer number (14003763879).

Almost surely, 2^90691042196 is an apocalyptic number.

It is an amenable number.

90691042196 is a deficient number, since it is larger than the sum of its proper divisors (77354124352).

90691042196 is a wasteful number, since it uses less digits than its factorization.

90691042196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1333691818 (or 1333691816 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 47.

The spelling of 90691042196 in words is "ninety billion, six hundred ninety-one million, forty-two thousand, one hundred ninety-six".