13040086878 has 384 divisors, whose sum is σ = 39626496000. Its totient is φ = 3060384768.

The previous prime is 13040086867. The next prime is 13040086883. The reversal of 13040086878 is 87868004031.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 25924375 + ... + 25924877.

It is an arithmetic number, because the mean of its divisors is an integer number (103194000).

Almost surely, 2^13040086878 is an apocalyptic number.

13040086878 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 13040086878, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19813248000).

13040086878 is an abundant number, since it is smaller than the sum of its proper divisors (26586409122).

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

13040086878 is a wasteful number, since it uses less digits than its factorization.

13040086878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 581 (or 564 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 45.

The spelling of 13040086878 in words is "thirteen billion, forty million, eighty-six thousand, eight hundred seventy-eight".