13979105280 has 768 divisors, whose sum is σ = 58873651200. Its totient is φ = 3078881280.

The previous prime is 13979105251. The next prime is 13979105281. The reversal of 13979105280 is 8250197931.

13979105280 is a `hidden beast` number, since 1 + 39 + 7 + 91 + 0 + 528 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (768).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13979105281) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 59996044 + ... + 59996276.

It is an arithmetic number, because the mean of its divisors is an integer number (76658400).

Almost surely, 2^13979105280 is an apocalyptic number.

13979105280 is a gapful number since it is divisible by the number (10) 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 13979105280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29436825600).

13979105280 is an abundant number, since it is smaller than the sum of its proper divisors (44894545920).

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

13979105280 is a wasteful number, since it uses less digits than its factorization.

13979105280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307 (or 281 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 45.

The spelling of 13979105280 in words is "thirteen billion, nine hundred seventy-nine million, one hundred five thousand, two hundred eighty".