90197553361 has 8 divisors (see below), whose sum is σ = 95808419784. Its totient is φ = 84620590080.

The previous prime is 90197553353. The next prime is 90197553373. The reversal of 90197553361 is 16335579109.

It can be written as a sum of positive squares in 4 ways, for example, as 463756225 + 89733797136 = 21535^2 + 299556^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 90197553361 - 2³ = 90197553353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90197553961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8470300 + ... + 8480941.

It is an arithmetic number, because the mean of its divisors is an integer number (11976052473).

Almost surely, 2^90197553361 is an apocalyptic number.

It is an amenable number.

90197553361 is a deficient number, since it is larger than the sum of its proper divisors (5610866423).

90197553361 is a wasteful number, since it uses less digits than its factorization.

90197553361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16951571.

The product of its (nonzero) digits is 765450, while the sum is 49.

The spelling of 90197553361 in words is "ninety billion, one hundred ninety-seven million, five hundred fifty-three thousand, three hundred sixty-one".