13220230878 has 12 divisors (see below), whose sum is σ = 28643833608. Its totient is φ = 4406743620.

The previous prime is 13220230817. The next prime is 13220230909. The reversal of 13220230878 is 87803202231.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 367228618 + ... + 367228653.

It is an arithmetic number, because the mean of its divisors is an integer number (2386986134).

Almost surely, 2^13220230878 is an apocalyptic number.

13220230878 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

13220230878 is an abundant number, since it is smaller than the sum of its proper divisors (15423602730).

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

13220230878 is a wasteful number, since it uses less digits than its factorization.

13220230878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 734457279 (or 734457276 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The spelling of 13220230878 in words is "thirteen billion, two hundred twenty million, two hundred thirty thousand, eight hundred seventy-eight".