13564698798 has 64 divisors (see below), whose sum is σ = 31464437760. Its totient is φ = 3818459232.

The previous prime is 13564698781. The next prime is 13564698943. The reversal of 13564698798 is 89789646531.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1316061 + ... + 1326327.

It is an arithmetic number, because the mean of its divisors is an integer number (491631840).

Almost surely, 2^13564698798 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13564698798, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15732218880).

13564698798 is an abundant number, since it is smaller than the sum of its proper divisors (17899738962).

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

13564698798 is a wasteful number, since it uses less digits than its factorization.

13564698798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10741.

The product of its digits is 78382080, while the sum is 66.

The spelling of 13564698798 in words is "thirteen billion, five hundred sixty-four million, six hundred ninety-eight thousand, seven hundred ninety-eight".