63716767605 has 24 divisors (see below), whose sum is σ = 110600001720. Its totient is φ = 33933782400.

The previous prime is 63716767573. The next prime is 63716767607. The reversal of 63716767605 is 50676761736.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 26272195569 + 37444572036 = 162087^2 + 193506^2 .

It is not a de Polignac number, because 63716767605 - 2⁵ = 63716767573 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63716767607) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 978390 + ... + 1041479.

It is an arithmetic number, because the mean of its divisors is an integer number (4608333405).

Almost surely, 2^63716767605 is an apocalyptic number.

It is an amenable number.

63716767605 is a deficient number, since it is larger than the sum of its proper divisors (46883234115).

63716767605 is a wasteful number, since it uses less digits than its factorization.

63716767605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2020581 (or 2020578 counting only the distinct ones).

The product of its (nonzero) digits is 6667920, while the sum is 54.

The spelling of 63716767605 in words is "sixty-three billion, seven hundred sixteen million, seven hundred sixty-seven thousand, six hundred five".