14785909978 has 16 divisors (see below), whose sum is σ = 26164929024. Its totient is φ = 6132404880.

The previous prime is 14785909969. The next prime is 14785909979. The reversal of 14785909978 is 87990958741.

It is not an unprimeable number, because it can be changed into a prime (14785909979) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17034025 + ... + 17034892.

It is an arithmetic number, because the mean of its divisors is an integer number (1635308064).

Almost surely, 2^14785909978 is an apocalyptic number.

14785909978 is a deficient number, since it is larger than the sum of its proper divisors (11379019046).

14785909978 is a wasteful number, since it uses less digits than its factorization.

14785909978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34068957.

The product of its (nonzero) digits is 45722880, while the sum is 67.

The spelling of 14785909978 in words is "fourteen billion, seven hundred eighty-five million, nine hundred nine thousand, nine hundred seventy-eight".