13249960878 has 128 divisors (see below), whose sum is σ = 34846433280. Its totient is φ = 3253979520.

The previous prime is 13249960877. The next prime is 13249960903. The reversal of 13249960878 is 87806994231.

It is a super-2 number, since 2×13249960878² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13249960873) 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, 5678200 + ... + 5680532.

It is an arithmetic number, because the mean of its divisors is an integer number (272237760).

Almost surely, 2^13249960878 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13249960878, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17423216640).

13249960878 is an abundant number, since it is smaller than the sum of its proper divisors (21596472402).

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

13249960878 is a wasteful number, since it uses less digits than its factorization.

13249960878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3022.

The product of its (nonzero) digits is 5225472, while the sum is 57.

The spelling of 13249960878 in words is "thirteen billion, two hundred forty-nine million, nine hundred sixty thousand, eight hundred seventy-eight".