13778929320 has 64 divisors (see below), whose sum is σ = 44516545920. Its totient is φ = 3391736064.

The previous prime is 13778929319. The next prime is 13778929357. The reversal of 13778929320 is 2392987731.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4414764 + ... + 4417883.

It is an arithmetic number, because the mean of its divisors is an integer number (695571030).

Almost surely, 2^13778929320 is an apocalyptic number.

13778929320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13778929320 is an abundant number, since it is smaller than the sum of its proper divisors (30737616600).

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

13778929320 is a wasteful number, since it uses less digits than its factorization.

13778929320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8832674 (or 8832670 counting only the distinct ones).

The product of its (nonzero) digits is 1143072, while the sum is 51.

The spelling of 13778929320 in words is "thirteen billion, seven hundred seventy-eight million, nine hundred twenty-nine thousand, three hundred twenty".