20263585859 has 8 divisors (see below), whose sum is σ = 22333625328. Its totient is φ = 18231528960.

The previous prime is 20263585843. The next prime is 20263585907. The reversal of 20263585859 is 95858536202.

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

It is a cyclic number.

It is not a de Polignac number, because 20263585859 - 2⁴ = 20263585843 is a prime.

It is a super-2 number, since 2×20263585859² (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 20263585859.

It is not an unprimeable number, because it can be changed into a prime (20263585819) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9494522 + ... + 9496655.

It is an arithmetic number, because the mean of its divisors is an integer number (2791703166).

Almost surely, 2^20263585859 is an apocalyptic number.

20263585859 is a deficient number, since it is larger than the sum of its proper divisors (2070039469).

20263585859 is a wasteful number, since it uses less digits than its factorization.

20263585859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18991285.

The product of its (nonzero) digits is 5184000, while the sum is 53.

The spelling of 20263585859 in words is "twenty billion, two hundred sixty-three million, five hundred eighty-five thousand, eight hundred fifty-nine".