14011239978 has 16 divisors (see below), whose sum is σ = 31136088960. Its totient is φ = 4670413308.

The previous prime is 14011239967. The next prime is 14011239989. The reversal of 14011239978 is 87993211041.

14011239978 is a `hidden beast` number, since 1 + 401 + 1 + 239 + 9 + 7 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (14011239967) and next prime (14011239989).

It is a super-2 number, since 2×14011239978² (a number of 21 digits) contains 22 as substring.

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, 129733650 + ... + 129733757.

It is an arithmetic number, because the mean of its divisors is an integer number (1946005560).

Almost surely, 2^14011239978 is an apocalyptic number.

14011239978 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

14011239978 is an abundant number, since it is smaller than the sum of its proper divisors (17124848982).

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

14011239978 is a wasteful number, since it uses less digits than its factorization.

14011239978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259467418 (or 259467412 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 45.

The spelling of 14011239978 in words is "fourteen billion, eleven million, two hundred thirty-nine thousand, nine hundred seventy-eight".