90578396082409 has 16 divisors (see below), whose sum is σ = 93326368186368. Its totient is φ = 87864658785792.

The previous prime is 90578396082407. The next prime is 90578396082491. The reversal of 90578396082409 is 90428069387509.

It is a cyclic number.

It is not a de Polignac number, because 90578396082409 - 2¹ = 90578396082407 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90578396082407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 265629229 + ... + 265970005.

It is an arithmetic number, because the mean of its divisors is an integer number (5832898011648).

Almost surely, 2^{90578396082409} is an apocalyptic number.

It is an amenable number.

90578396082409 is a deficient number, since it is larger than the sum of its proper divisors (2747972103959).

90578396082409 is a wasteful number, since it uses less digits than its factorization.

90578396082409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390984.

The product of its (nonzero) digits is 235146240, while the sum is 70.

The spelling of 90578396082409 in words is "ninety trillion, five hundred seventy-eight billion, three hundred ninety-six million, eighty-two thousand, four hundred nine".