13917680540 has 12 divisors (see below), whose sum is σ = 29227129176. Its totient is φ = 5567072208.

The previous prime is 13917680471. The next prime is 13917680549. The reversal of 13917680540 is 4508671931.

It is a super-2 number, since 2×13917680540² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13917680491 and 13917680500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13917680549) 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, 347941994 + ... + 347942033.

It is an arithmetic number, because the mean of its divisors is an integer number (2435594098).

Almost surely, 2^13917680540 is an apocalyptic number.

13917680540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13917680540 is an abundant number, since it is smaller than the sum of its proper divisors (15309448636).

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

13917680540 is a wasteful number, since it uses less digits than its factorization.

13917680540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 695884036 (or 695884034 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 44.

The spelling of 13917680540 in words is "thirteen billion, nine hundred seventeen million, six hundred eighty thousand, five hundred forty".