13098779217 has 16 divisors (see below), whose sum is σ = 19605660480. Its totient is φ = 8642491776.

The previous prime is 13098779209. The next prime is 13098779219. The reversal of 13098779217 is 71297789031.

It is not a de Polignac number, because 13098779217 - 2³ = 13098779209 is a prime.

It is a super-2 number, since 2×13098779217² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13098779219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2498103 + ... + 2503340.

It is an arithmetic number, because the mean of its divisors is an integer number (1225353780).

Almost surely, 2^13098779217 is an apocalyptic number.

It is an amenable number.

13098779217 is a deficient number, since it is larger than the sum of its proper divisors (6506881263).

13098779217 is an equidigital number, since it uses as much as digits as its factorization.

13098779217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5001549 (or 5001543 counting only the distinct ones).

The product of its (nonzero) digits is 1333584, while the sum is 54.

The spelling of 13098779217 in words is "thirteen billion, ninety-eight million, seven hundred seventy-nine thousand, two hundred seventeen".