13781401660 has 24 divisors (see below), whose sum is σ = 31167170496. Its totient is φ = 5088517440.

The previous prime is 13781401657. The next prime is 13781401723. The reversal of 13781401660 is 6610418731.

13781401660 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26502436 + ... + 26502955.

It is an arithmetic number, because the mean of its divisors is an integer number (1298632104).

Almost surely, 2^13781401660 is an apocalyptic number.

13781401660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13781401660 is an abundant number, since it is smaller than the sum of its proper divisors (17385768836).

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

13781401660 is a wasteful number, since it uses less digits than its factorization.

13781401660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53005413 (or 53005411 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 37.

The spelling of 13781401660 in words is "thirteen billion, seven hundred eighty-one million, four hundred one thousand, six hundred sixty".