14878405990 has 32 divisors (see below), whose sum is σ = 30809723904. Its totient is φ = 5067381600.

The previous prime is 14878405939. The next prime is 14878405999. The reversal of 14878405990 is 9950487841.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14878405999) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 693234 + ... + 714373.

It is an arithmetic number, because the mean of its divisors is an integer number (962803872).

Almost surely, 2^14878405990 is an apocalyptic number.

14878405990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

14878405990 is an abundant number, since it is smaller than the sum of its proper divisors (15931317914).

14878405990 is a wasteful number, since it uses less digits than its factorization.

14878405990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1407772.

The product of its (nonzero) digits is 2903040, while the sum is 55.

The spelling of 14878405990 in words is "fourteen billion, eight hundred seventy-eight million, four hundred five thousand, nine hundred ninety".