13228238499 has 32 divisors (see below), whose sum is σ = 20626560000. Its totient is φ = 7537727232.

The previous prime is 13228238449. The next prime is 13228238533. The reversal of 13228238499 is 99483282231.

It is not a de Polignac number, because 13228238499 - 2⁷ = 13228238371 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13228238449) 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, 351507 + ... + 387315.

It is an arithmetic number, because the mean of its divisors is an integer number (644580000).

Almost surely, 2^13228238499 is an apocalyptic number.

13228238499 is a deficient number, since it is larger than the sum of its proper divisors (7398321501).

13228238499 is an equidigital number, since it uses as much as digits as its factorization.

13228238499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36192 (or 36178 counting only the distinct ones).

The product of its digits is 1492992, while the sum is 51.

The spelling of 13228238499 in words is "thirteen billion, two hundred twenty-eight million, two hundred thirty-eight thousand, four hundred ninety-nine".