90661609036 has 12 divisors (see below), whose sum is σ = 158660433400. Its totient is φ = 45330056640.

The previous prime is 90661609033. The next prime is 90661609043. The reversal of 90661609036 is 63090616609.

It is not an unprimeable number, because it can be changed into a prime (90661609033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 155476 + ... + 453316.

Almost surely, 2^90661609036 is an apocalyptic number.

It is an amenable number.

90661609036 is a deficient number, since it is larger than the sum of its proper divisors (67998824364).

90661609036 is a wasteful number, since it uses less digits than its factorization.

90661609036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373944 (or 373942 counting only the distinct ones).

The product of its (nonzero) digits is 314928, while the sum is 46.

The spelling of 90661609036 in words is "ninety billion, six hundred sixty-one million, six hundred nine thousand, thirty-six".