13308213778 has 16 divisors (see below), whose sum is σ = 19998052416. Its totient is φ = 6642208720.

The previous prime is 13308213773. The next prime is 13308213791. The reversal of 13308213778 is 87731280331.

It is not an unprimeable number, because it can be changed into a prime (13308213773) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4679625 + ... + 4682467.

It is an arithmetic number, because the mean of its divisors is an integer number (1249878276).

Almost surely, 2^13308213778 is an apocalyptic number.

13308213778 is a deficient number, since it is larger than the sum of its proper divisors (6689838638).

13308213778 is a wasteful number, since it uses less digits than its factorization.

13308213778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6209.

The product of its (nonzero) digits is 169344, while the sum is 43.

The spelling of 13308213778 in words is "thirteen billion, three hundred eight million, two hundred thirteen thousand, seven hundred seventy-eight".