13910871078 has 72 divisors (see below), whose sum is σ = 34480515888. Its totient is φ = 4028467968.

The previous prime is 13910871077. The next prime is 13910871113. The reversal of 13910871078 is 87017801931.

It is a happy number.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13910871077) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 35226 + ... + 170477.

It is an arithmetic number, because the mean of its divisors is an integer number (478896054).

Almost surely, 2^13910871078 is an apocalyptic number.

13910871078 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

13910871078 is an abundant number, since it is smaller than the sum of its proper divisors (20569644810).

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

13910871078 is a wasteful number, since it uses less digits than its factorization.

13910871078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205758 (or 205738 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 45.

The spelling of 13910871078 in words is "thirteen billion, nine hundred ten million, eight hundred seventy-one thousand, seventy-eight".