20034505859 has 4 divisors (see below), whose sum is σ = 20035028520. Its totient is φ = 20033983200.

The previous prime is 20034505849. The next prime is 20034505871. The reversal of 20034505859 is 95850543002.

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-20034505859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20034505819) 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, 198854 + ... + 282155.

It is an arithmetic number, because the mean of its divisors is an integer number (5008757130).

Almost surely, 2^20034505859 is an apocalyptic number.

20034505859 is a deficient number, since it is larger than the sum of its proper divisors (522661).

20034505859 is an equidigital number, since it uses as much as digits as its factorization.

20034505859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 522660.

The product of its (nonzero) digits is 216000, while the sum is 41.

The spelling of 20034505859 in words is "twenty billion, thirty-four million, five hundred five thousand, eight hundred fifty-nine".