163976242751 has 2 divisors, whose sum is σ = 163976242752. Its totient is φ = 163976242750.

The previous prime is 163976242739. The next prime is 163976242753. The reversal of 163976242751 is 157242679361.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 163976242751 - 2⁶ = 163976242687 is a prime.

Together with 163976242753, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 163976242693 and 163976242702.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163976242753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81988121375 + 81988121376.

It is an arithmetic number, because the mean of its divisors is an integer number (81988121376).

Almost surely, 2^163976242751 is an apocalyptic number.

163976242751 is a deficient number, since it is larger than the sum of its proper divisors (1).

163976242751 is an equidigital number, since it uses as much as digits as its factorization.

163976242751 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3810240, while the sum is 53.

The spelling of 163976242751 in words is "one hundred sixty-three billion, nine hundred seventy-six million, two hundred forty-two thousand, seven hundred fifty-one".