20858543101 has 32 divisors (see below), whose sum is σ = 23473566720. Its totient is φ = 18373555200.

The previous prime is 20858543077. The next prime is 20858543143. The reversal of 20858543101 is 10134585802.

It is not a de Polignac number, because 20858543101 - 2²⁵ = 20824988669 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20858541101) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31555711 + ... + 31556371.

It is an arithmetic number, because the mean of its divisors is an integer number (733548960).

Almost surely, 2^20858543101 is an apocalyptic number.

It is an amenable number.

20858543101 is a deficient number, since it is larger than the sum of its proper divisors (2615023619).

20858543101 is a wasteful number, since it uses less digits than its factorization.

20858543101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1317.

The product of its (nonzero) digits is 38400, while the sum is 37.

The spelling of 20858543101 in words is "twenty billion, eight hundred fifty-eight million, five hundred forty-three thousand, one hundred one".