163503197651 has 2 divisors, whose sum is σ = 163503197652. Its totient is φ = 163503197650.

The previous prime is 163503197609. The next prime is 163503197681. The reversal of 163503197651 is 156791305361.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 163503197651 - 2⁶ = 163503197587 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 163503197596 and 163503197605.

It is not a weakly prime, because it can be changed into another prime (163503197681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81751598825 + 81751598826.

It is an arithmetic number, because the mean of its divisors is an integer number (81751598826).

Almost surely, 2^163503197651 is an apocalyptic number.

163503197651 is a deficient number, since it is larger than the sum of its proper divisors (1).

163503197651 is an equidigital number, since it uses as much as digits as its factorization.

163503197651 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 510300, while the sum is 47.

The spelling of 163503197651 in words is "one hundred sixty-three billion, five hundred three million, one hundred ninety-seven thousand, six hundred fifty-one".