20551101711 has 12 divisors (see below), whose sum is σ = 31875178392. Its totient is φ = 11743486608.

The previous prime is 20551101679. The next prime is 20551101713. The reversal of 20551101711 is 11710115502.

It is not a de Polignac number, because 20551101711 - 2⁵ = 20551101679 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20551101713) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 69901560 + ... + 69901853.

It is an arithmetic number, because the mean of its divisors is an integer number (2656264866).

Almost surely, 2^20551101711 is an apocalyptic number.

20551101711 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

20551101711 is a deficient number, since it is larger than the sum of its proper divisors (11324076681).

20551101711 is a wasteful number, since it uses less digits than its factorization.

20551101711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139803430 (or 139803423 counting only the distinct ones).

The product of its (nonzero) digits is 350, while the sum is 24.

The spelling of 20551101711 in words is "twenty billion, five hundred fifty-one million, one hundred one thousand, seven hundred eleven".