90819595469123 has 4 divisors (see below), whose sum is σ = 92931679084728. Its totient is φ = 88707511853520.

The previous prime is 90819595469111. The next prime is 90819595469147. The reversal of 90819595469123 is 32196459591809.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 90819595469123 - 2⁴ = 90819595469107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90819595439123) 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, 1056041807738 + ... + 1056041807823.

It is an arithmetic number, because the mean of its divisors is an integer number (23232919771182).

Almost surely, 2^{90819595469123} is an apocalyptic number.

90819595469123 is a deficient number, since it is larger than the sum of its proper divisors (2112083615605).

90819595469123 is a wasteful number, since it uses less digits than its factorization.

90819595469123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2112083615604.

The product of its (nonzero) digits is 188956800, while the sum is 71.

The spelling of 90819595469123 in words is "ninety trillion, eight hundred nineteen billion, five hundred ninety-five million, four hundred sixty-nine thousand, one hundred twenty-three".