90826386864890 has 8 divisors (see below), whose sum is σ = 163487496356820. Its totient is φ = 36330554745952.

The previous prime is 90826386864883. The next prime is 90826386864901. The reversal of 90826386864890 is 9846868362809.

It can be written as a sum of positive squares in 2 ways, for example, as 85385602027489 + 5440784837401 = 9240433^2 + 2332549^2 .

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

It is a super-2 number, since 2×90826386864890² (a number of 29 digits) contains 22 as substring.

It is a Curzon 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, 4541319343235 + ... + 4541319343254.

Almost surely, 2^{90826386864890} is an apocalyptic number.

90826386864890 is a deficient number, since it is larger than the sum of its proper divisors (72661109491930).

90826386864890 is a wasteful number, since it uses less digits than its factorization.

90826386864890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9082638686496.

The product of its (nonzero) digits is 1719926784, while the sum is 77.

The spelling of 90826386864890 in words is "ninety trillion, eight hundred twenty-six billion, three hundred eighty-six million, eight hundred sixty-four thousand, eight hundred ninety".