13111918340 has 12 divisors (see below), whose sum is σ = 27535028556. Its totient is φ = 5244767328.

The previous prime is 13111918331. The next prime is 13111918349. The reversal of 13111918340 is 4381911131.

It is an interprime number because it is at equal distance from previous prime (13111918331) and next prime (13111918349).

It can be written as a sum of positive squares in 2 ways, for example, as 8376276484 + 4735641856 = 91522^2 + 68816^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13111918297 and 13111918306.

It is not an unprimeable number, because it can be changed into a prime (13111918349) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 327797939 + ... + 327797978.

It is an arithmetic number, because the mean of its divisors is an integer number (2294585713).

Almost surely, 2^13111918340 is an apocalyptic number.

13111918340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13111918340 is an abundant number, since it is smaller than the sum of its proper divisors (14423110216).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13111918340 is a wasteful number, since it uses less digits than its factorization.

13111918340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 655595926 (or 655595924 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 32.

The spelling of 13111918340 in words is "thirteen billion, one hundred eleven million, nine hundred eighteen thousand, three hundred forty".