13277722440 has 128 divisors (see below), whose sum is σ = 41815388160. Its totient is φ = 3366384384.

The previous prime is 13277722439. The next prime is 13277722453. The reversal of 13277722440 is 4422777231.

It is a Cunningham number, because it is equal to 115229²-1.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 446517 + ... + 475323.

It is an arithmetic number, because the mean of its divisors is an integer number (326682720).

Almost surely, 2^13277722440 is an apocalyptic number.

13277722440 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 13277722440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20907694080).

13277722440 is an abundant number, since it is smaller than the sum of its proper divisors (28537665720).

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

13277722440 is a wasteful number, since it uses less digits than its factorization.

13277722440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29011 (or 29007 counting only the distinct ones).

The product of its (nonzero) digits is 131712, while the sum is 39.

The spelling of 13277722440 in words is "thirteen billion, two hundred seventy-seven million, seven hundred twenty-two thousand, four hundred forty".