13861247153880 has 512 divisors, whose sum is σ = 50549337446400. Its totient is φ = 2978645557248.

The previous prime is 13861247153857. The next prime is 13861247153947. The reversal of 13861247153880 is 8835174216831.

It is a self number, because there is not a number n which added to its sum of digits gives 13861247153880.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 6838305427 + ... + 6838307453.

It is an arithmetic number, because the mean of its divisors is an integer number (98729174700).

Almost surely, 2^{13861247153880} is an apocalyptic number.

13861247153880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13861247153880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25274668723200).

13861247153880 is an abundant number, since it is smaller than the sum of its proper divisors (36688090292520).

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

13861247153880 is a wasteful number, since it uses less digits than its factorization.

13861247153880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3756 (or 3718 counting only the distinct ones).

The product of its (nonzero) digits is 7741440, while the sum is 57.

The spelling of 13861247153880 in words is "thirteen trillion, eight hundred sixty-one billion, two hundred forty-seven million, one hundred fifty-three thousand, eight hundred eighty".