14778494660 has 24 divisors (see below), whose sum is σ = 31220683200. Its totient is φ = 5875998944.

The previous prime is 14778494641. The next prime is 14778494701. The reversal of 14778494660 is 6649487741.

It is a junction number, because it is equal to n+sod(n) for n = 14778494596 and 14778494605.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2209010 + ... + 2215689.

It is an arithmetic number, because the mean of its divisors is an integer number (1300861800).

Almost surely, 2^14778494660 is an apocalyptic number.

14778494660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

14778494660 is an abundant number, since it is smaller than the sum of its proper divisors (16442188540).

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

14778494660 is a wasteful number, since it uses less digits than its factorization.

14778494660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4424875 (or 4424873 counting only the distinct ones).

The product of its (nonzero) digits is 8128512, while the sum is 56.

The spelling of 14778494660 in words is "fourteen billion, seven hundred seventy-eight million, four hundred ninety-four thousand, six hundred sixty".