20354211859 has 6 divisors (see below), whose sum is σ = 21277654916. Its totient is φ = 19469245620.

The previous prime is 20354211851. The next prime is 20354211887. The reversal of 20354211859 is 95811245302.

It is a happy number.

It is not a de Polignac number, because 20354211859 - 2³ = 20354211851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20354211851) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19237857 + ... + 19238914.

Almost surely, 2^20354211859 is an apocalyptic number.

20354211859 is a deficient number, since it is larger than the sum of its proper divisors (923443057).

20354211859 is an equidigital number, since it uses as much as digits as its factorization.

20354211859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38476817 (or 38476794 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 40.

The spelling of 20354211859 in words is "twenty billion, three hundred fifty-four million, two hundred eleven thousand, eight hundred fifty-nine".