20411853811 has 16 divisors (see below), whose sum is σ = 21764505600. Its totient is φ = 19076300928.

The previous prime is 20411853799. The next prime is 20411853821. The reversal of 20411853811 is 11835811402.

It is a cyclic number.

It is not a de Polignac number, because 20411853811 - 2²⁵ = 20378299379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20411853821) 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, 3984910 + ... + 3990028.

It is an arithmetic number, because the mean of its divisors is an integer number (1360281600).

Almost surely, 2^20411853811 is an apocalyptic number.

20411853811 is a deficient number, since it is larger than the sum of its proper divisors (1352651789).

20411853811 is a wasteful number, since it uses less digits than its factorization.

20411853811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6738.

The product of its (nonzero) digits is 7680, while the sum is 34.

The spelling of 20411853811 in words is "twenty billion, four hundred eleven million, eight hundred fifty-three thousand, eight hundred eleven".