13650078720 has 352 divisors, whose sum is σ = 45653667840. Its totient is φ = 3477012480.

The previous prime is 13650078691. The next prime is 13650078721. The reversal of 13650078720 is 2787005631.

It is not an unprimeable number, because it can be changed into a prime (13650078721) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 51901309 + ... + 51901571.

It is an arithmetic number, because the mean of its divisors is an integer number (129697920).

Almost surely, 2^13650078720 is an apocalyptic number.

13650078720 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 13650078720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22826833920).

13650078720 is an abundant number, since it is smaller than the sum of its proper divisors (32003589120).

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

13650078720 is a wasteful number, since it uses less digits than its factorization.

13650078720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431 (or 413 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 39.

The spelling of 13650078720 in words is "thirteen billion, six hundred fifty million, seventy-eight thousand, seven hundred twenty".