13774479840 has 768 divisors, whose sum is σ = 56827008000. Its totient is φ = 3089571840.

The previous prime is 13774479839. The next prime is 13774479847. The reversal of 13774479840 is 4897447731.

13774479840 is a `hidden beast` number, since 1 + 3 + 77 + 447 + 98 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13774479847) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 233465731 + ... + 233465789.

It is an arithmetic number, because the mean of its divisors is an integer number (73993500).

Almost surely, 2^13774479840 is an apocalyptic number.

13774479840 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 13774479840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28413504000).

13774479840 is an abundant number, since it is smaller than the sum of its proper divisors (43052528160).

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

13774479840 is a wasteful number, since it uses less digits than its factorization.

13774479840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145 (or 97 counting only the distinct ones).

The product of its (nonzero) digits is 4741632, while the sum is 54.

The spelling of 13774479840 in words is "thirteen billion, seven hundred seventy-four million, four hundred seventy-nine thousand, eight hundred forty".