14623421978 has 16 divisors (see below), whose sum is σ = 23940766080. Its totient is φ = 6643807200.

The previous prime is 14623421957. The next prime is 14623421987. The reversal of 14623421978 is 87912432641.

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, 113138 + ... + 205053.

It is an arithmetic number, because the mean of its divisors is an integer number (1496297880).

Almost surely, 2^14623421978 is an apocalyptic number.

14623421978 is a deficient number, since it is larger than the sum of its proper divisors (9317344102).

14623421978 is a wasteful number, since it uses less digits than its factorization.

14623421978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320293.

The product of its digits is 580608, while the sum is 47.

The spelling of 14623421978 in words is "fourteen billion, six hundred twenty-three million, four hundred twenty-one thousand, nine hundred seventy-eight".