20372263647163 has 2 divisors, whose sum is σ = 20372263647164. Its totient is φ = 20372263647162.

The previous prime is 20372263647149. The next prime is 20372263647167. The reversal of 20372263647163 is 36174636227302.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20372263647163 - 2¹³ = 20372263638971 is a prime.

It is a super-7 number, since 7×20372263647163⁷ (a number of 95 digits) contains 7777777 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 20372263647163.

It is not a weakly prime, because it can be changed into another prime (20372263647167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10186131823581 + 10186131823582.

It is an arithmetic number, because the mean of its divisors is an integer number (10186131823582).

Almost surely, 2^{20372263647163} is an apocalyptic number.

20372263647163 is a deficient number, since it is larger than the sum of its proper divisors (1).

20372263647163 is an equidigital number, since it uses as much as digits as its factorization.

20372263647163 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9144576, while the sum is 52.

The spelling of 20372263647163 in words is "twenty trillion, three hundred seventy-two billion, two hundred sixty-three million, six hundred forty-seven thousand, one hundred sixty-three".