14781878640912 has 20 divisors (see below), whose sum is σ = 38186519822480. Its totient is φ = 4927292880288.

The previous prime is 14781878640887. The next prime is 14781878640913. The reversal of 14781878640912 is 21904687818741.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (14781878640913) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 153977902462 + ... + 153977902557.

It is an arithmetic number, because the mean of its divisors is an integer number (1909325991124).

Almost surely, 2^{14781878640912} is an apocalyptic number.

14781878640912 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

14781878640912 is an abundant number, since it is smaller than the sum of its proper divisors (23404641181568).

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

14781878640912 is a wasteful number, since it uses less digits than its factorization.

14781878640912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307955805030 (or 307955805024 counting only the distinct ones).

The product of its (nonzero) digits is 43352064, while the sum is 66.

The spelling of 14781878640912 in words is "fourteen trillion, seven hundred eighty-one billion, eight hundred seventy-eight million, six hundred forty thousand, nine hundred twelve".