13280528378 has 32 divisors (see below), whose sum is σ = 21731746176. Its totient is φ = 6050017728.

The previous prime is 13280528357. The next prime is 13280528411. The reversal of 13280528378 is 87382508231.

It is a happy number.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 3120500 + ... + 3124752.

It is an arithmetic number, because the mean of its divisors is an integer number (679117068).

Almost surely, 2^13280528378 is an apocalyptic number.

13280528378 is a deficient number, since it is larger than the sum of its proper divisors (8451217798).

13280528378 is a wasteful number, since it uses less digits than its factorization.

13280528378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5798.

The product of its (nonzero) digits is 645120, while the sum is 47.

The spelling of 13280528378 in words is "thirteen billion, two hundred eighty million, five hundred twenty-eight thousand, three hundred seventy-eight".