20404524355 has 4 divisors (see below), whose sum is σ = 24485429232. Its totient is φ = 16323619480.

The previous prime is 20404524341. The next prime is 20404524457. The reversal of 20404524355 is 55342540402.

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

It is not a de Polignac number, because 20404524355 - 2¹⁷ = 20404393283 is a prime.

It is a super-2 number, since 2×20404524355² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20404524355.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2040452431 + ... + 2040452440.

It is an arithmetic number, because the mean of its divisors is an integer number (6121357308).

Almost surely, 2^20404524355 is an apocalyptic number.

20404524355 is a deficient number, since it is larger than the sum of its proper divisors (4080904877).

20404524355 is an equidigital number, since it uses as much as digits as its factorization.

20404524355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4080904876.

The product of its (nonzero) digits is 96000, while the sum is 34.

The spelling of 20404524355 in words is "twenty billion, four hundred four million, five hundred twenty-four thousand, three hundred fifty-five".