20948090604523 has 4 divisors (see below), whose sum is σ = 20948199718248. Its totient is φ = 20947981490800.

The previous prime is 20948090604509. The next prime is 20948090604527. The reversal of 20948090604523 is 32540609084902.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20948090604523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20948090604527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54268378 + ... + 54653023.

It is an arithmetic number, because the mean of its divisors is an integer number (5237049929562).

Almost surely, 2^{20948090604523} is an apocalyptic number.

20948090604523 is a deficient number, since it is larger than the sum of its proper divisors (109113725).

20948090604523 is a wasteful number, since it uses less digits than its factorization.

20948090604523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109113724.

The product of its (nonzero) digits is 3732480, while the sum is 52.

The spelling of 20948090604523 in words is "twenty trillion, nine hundred forty-eight billion, ninety million, six hundred four thousand, five hundred twenty-three".