14555791961 has 2 divisors, whose sum is σ = 14555791962. Its totient is φ = 14555791960.

The previous prime is 14555791903. The next prime is 14555791963. The reversal of 14555791961 is 16919755541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14500735561 + 55056400 = 120419^2 + 7420^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-14555791961 is a prime.

It is a super-2 number, since 2×14555791961² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

Together with 14555791963, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (14555791963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7277895980 + 7277895981.

It is an arithmetic number, because the mean of its divisors is an integer number (7277895981).

Almost surely, 2^14555791961 is an apocalyptic number.

It is an amenable number.

14555791961 is a deficient number, since it is larger than the sum of its proper divisors (1).

14555791961 is an equidigital number, since it uses as much as digits as its factorization.

14555791961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1701000, while the sum is 53.

The spelling of 14555791961 in words is "fourteen billion, five hundred fifty-five million, seven hundred ninety-one thousand, nine hundred sixty-one".