13881022120440 has 48 divisors (see below), whose sum is σ = 45113321892600. Its totient is φ = 3701605898688.

The previous prime is 13881022120429. The next prime is 13881022120487. The reversal of 13881022120440 is 4402122018831.

13881022120440 is a `hidden beast` number, since 1 + 3 + 88 + 10 + 2 + 2 + 120 + 440 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 13881022120395 and 13881022120404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19279197030 + ... + 19279197749.

Almost surely, 2^{13881022120440} is an apocalyptic number.

13881022120440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13881022120440 is an abundant number, since it is smaller than the sum of its proper divisors (31232299772160).

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

13881022120440 is a wasteful number, since it uses less digits than its factorization.

13881022120440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38558394796 (or 38558394789 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 36.

The spelling of 13881022120440 in words is "thirteen trillion, eight hundred eighty-one billion, twenty-two million, one hundred twenty thousand, four hundred forty".