14011981993 has 2 divisors, whose sum is σ = 14011981994. Its totient is φ = 14011981992.

The previous prime is 14011981981. The next prime is 14011982057. The reversal of 14011981993 is 39918911041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13598591769 + 413390224 = 116613^2 + 20332^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-14011981993 is a prime.

It is not a weakly prime, because it can be changed into another prime (14011981913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7005990996 + 7005990997.

It is an arithmetic number, because the mean of its divisors is an integer number (7005990997).

Almost surely, 2^14011981993 is an apocalyptic number.

It is an amenable number.

14011981993 is a deficient number, since it is larger than the sum of its proper divisors (1).

14011981993 is an equidigital number, since it uses as much as digits as its factorization.

14011981993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69984, while the sum is 46.

It can be divided in two parts, 14011 and 981993, that added together give a square (996004 = 998²).

The spelling of 14011981993 in words is "fourteen billion, eleven million, nine hundred eighty-one thousand, nine hundred ninety-three".