20858130811 has 16 divisors (see below), whose sum is σ = 24333566400. Its totient is φ = 17871624960.

The previous prime is 20858130793. The next prime is 20858130827. The reversal of 20858130811 is 11803185802.

It is not a de Polignac number, because 20858130811 - 2⁵ = 20858130779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20858130211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1033065 + ... + 1053061.

It is an arithmetic number, because the mean of its divisors is an integer number (1520847900).

Almost surely, 2^20858130811 is an apocalyptic number.

20858130811 is a deficient number, since it is larger than the sum of its proper divisors (3475435589).

20858130811 is an equidigital number, since it uses as much as digits as its factorization.

20858130811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23059 (or 23045 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 37.

The spelling of 20858130811 in words is "twenty billion, eight hundred fifty-eight million, one hundred thirty thousand, eight hundred eleven".