13781416860 has 72 divisors (see below), whose sum is σ = 44262678096. Its totient is φ = 3458864640.

The previous prime is 13781416807. The next prime is 13781416867. The reversal of 13781416860 is 6861418731.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13781416867) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2248806 + ... + 2254925.

It is an arithmetic number, because the mean of its divisors is an integer number (614759418).

Almost surely, 2^13781416860 is an apocalyptic number.

13781416860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13781416860 is an abundant number, since it is smaller than the sum of its proper divisors (30481261236).

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

13781416860 is a wasteful number, since it uses less digits than its factorization.

13781416860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4503763 (or 4503758 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The spelling of 13781416860 in words is "thirteen billion, seven hundred eighty-one million, four hundred sixteen thousand, eight hundred sixty".