13778501140 has 12 divisors (see below), whose sum is σ = 28934852436. Its totient is φ = 5511400448.

The previous prime is 13778501081. The next prime is 13778501147. The reversal of 13778501140 is 4110587731.

It can be written as a sum of positive squares in 2 ways, for example, as 9155045124 + 4623456016 = 95682^2 + 67996^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 13778501140.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13778501147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 344462509 + ... + 344462548.

It is an arithmetic number, because the mean of its divisors is an integer number (2411237703).

Almost surely, 2^13778501140 is an apocalyptic number.

13778501140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13778501140 is an abundant number, since it is smaller than the sum of its proper divisors (15156351296).

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

13778501140 is a wasteful number, since it uses less digits than its factorization.

13778501140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 688925066 (or 688925064 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 37.

The spelling of 13778501140 in words is "thirteen billion, seven hundred seventy-eight million, five hundred one thousand, one hundred forty".