13938547694780 has 24 divisors (see below), whose sum is σ = 29279393036208. Its totient is φ = 5573810910848.

The previous prime is 13938547694759. The next prime is 13938547694833. The reversal of 13938547694780 is 8749674583931.

It is a super-2 number, since 2×13938547694780² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13938547694698 and 13938547694707.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100439369 + ... + 100578048.

It is an arithmetic number, because the mean of its divisors is an integer number (1219974709842).

Almost surely, 2^{13938547694780} is an apocalyptic number.

13938547694780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13938547694780 is an abundant number, since it is smaller than the sum of its proper divisors (15340845341428).

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

13938547694780 is a wasteful number, since it uses less digits than its factorization.

13938547694780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201020893 (or 201020891 counting only the distinct ones).

The product of its (nonzero) digits is 1097349120, while the sum is 74.

The spelling of 13938547694780 in words is "thirteen trillion, nine hundred thirty-eight billion, five hundred forty-seven million, six hundred ninety-four thousand, seven hundred eighty".