19765735063 has 2 divisors, whose sum is σ = 19765735064. Its totient is φ = 19765735062.

The previous prime is 19765735021. The next prime is 19765735091. The reversal of 19765735063 is 36053756791.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19765735063 is a prime.

It is a super-2 number, since 2×19765735063² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 19765735063.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19765738063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9882867531 + 9882867532.

It is an arithmetic number, because the mean of its divisors is an integer number (9882867532).

Almost surely, 2^19765735063 is an apocalyptic number.

19765735063 is a deficient number, since it is larger than the sum of its proper divisors (1).

19765735063 is an equidigital number, since it uses as much as digits as its factorization.

19765735063 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3572100, while the sum is 52.

The spelling of 19765735063 in words is "nineteen billion, seven hundred sixty-five million, seven hundred thirty-five thousand, sixty-three".