14978618081 has 4 divisors (see below), whose sum is σ = 17118420672. Its totient is φ = 12838815492.

The previous prime is 14978618063. The next prime is 14978618087. The reversal of 14978618081 is 18081687941.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-14978618081 is a prime.

It is a super-2 number, since 2×14978618081² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14978618087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1069901285 + ... + 1069901298.

It is an arithmetic number, because the mean of its divisors is an integer number (4279605168).

Almost surely, 2^14978618081 is an apocalyptic number.

It is an amenable number.

14978618081 is a deficient number, since it is larger than the sum of its proper divisors (2139802591).

14978618081 is an equidigital number, since it uses as much as digits as its factorization.

14978618081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2139802590.

The product of its (nonzero) digits is 774144, while the sum is 53.

The spelling of 14978618081 in words is "fourteen billion, nine hundred seventy-eight million, six hundred eighteen thousand, eighty-one".