13580779884 has 96 divisors (see below), whose sum is σ = 36536156160. Its totient is φ = 3845994048.

The previous prime is 13580779879. The next prime is 13580779889. The reversal of 13580779884 is 48897708531.

It is an interprime number because it is at equal distance from previous prime (13580779879) and next prime (13580779889).

It is not an unprimeable number, because it can be changed into a prime (13580779889) 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, 6064437 + ... + 6066675.

It is an arithmetic number, because the mean of its divisors is an integer number (380584960).

Almost surely, 2^13580779884 is an apocalyptic number.

13580779884 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13580779884, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18268078080).

13580779884 is an abundant number, since it is smaller than the sum of its proper divisors (22955376276).

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

13580779884 is a wasteful number, since it uses less digits than its factorization.

13580779884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2859 (or 2857 counting only the distinct ones).

The product of its (nonzero) digits is 13547520, while the sum is 60.

The spelling of 13580779884 in words is "thirteen billion, five hundred eighty million, seven hundred seventy-nine thousand, eight hundred eighty-four".