90661010682920 has 16 divisors (see below), whose sum is σ = 203987274036660. Its totient is φ = 36264404273152.

The previous prime is 90661010682899. The next prime is 90661010682961. The reversal of 90661010682920 is 2928601016609.

It can be written as a sum of positive squares in 2 ways, for example, as 86964689136196 + 3696321546724 = 9325486^2 + 1922582^2 .

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, 1133262633497 + ... + 1133262633576.

Almost surely, 2^{90661010682920} is an apocalyptic number.

It is an amenable number.

90661010682920 is an abundant number, since it is smaller than the sum of its proper divisors (113326263353740).

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

90661010682920 is a wasteful number, since it uses less digits than its factorization.

90661010682920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2266525267084 (or 2266525267080 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 50.

The spelling of 90661010682920 in words is "ninety trillion, six hundred sixty-one billion, ten million, six hundred eighty-two thousand, nine hundred twenty".