20118372911 has 24 divisors (see below), whose sum is σ = 25452854784. Its totient is φ = 15760180800.

The previous prime is 20118372907. The next prime is 20118372919. The reversal of 20118372911 is 11927381102.

It is not a de Polignac number, because 20118372911 - 2² = 20118372907 is a prime.

It is a super-2 number, since 2×20118372911² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20118372919) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 92015 + ... + 220688.

It is an arithmetic number, because the mean of its divisors is an integer number (1060535616).

Almost surely, 2^20118372911 is an apocalyptic number.

20118372911 is a deficient number, since it is larger than the sum of its proper divisors (5334481873).

20118372911 is a wasteful number, since it uses less digits than its factorization.

20118372911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312831 (or 312824 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 35.

The spelling of 20118372911 in words is "twenty billion, one hundred eighteen million, three hundred seventy-two thousand, nine hundred eleven".