63696169161 has 9 divisors (see below), whose sum is σ = 92006671341. Its totient is φ = 42463608012.

The previous prime is 63696169099. The next prime is 63696169171. The reversal of 63696169161 is 16196169636.

The square root of 63696169161 is 252381.

It is a perfect power (a square), and thus also a powerful number.

63696169161 is a `hidden beast` number, since 6 + 3 + 6 + 9 + 616 + 9 + 16 + 1 = 666.

63696169161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 63696169161 - 2²³ = 63687780553 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 63696169098 and 63696169107.

It is not an unprimeable number, because it can be changed into a prime (63696169171) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 715080 + ... + 799206.

Almost surely, 2^63696169161 is an apocalyptic number.

63696169161 is the 252381-st square number.

63696169161 is the 126191-st centered octagonal number.

It is an amenable number.

63696169161 is a deficient number, since it is larger than the sum of its proper divisors (28310502180).

63696169161 is an frugal number, since it uses more digits than its factorization.

63696169161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168260 (or 84130 counting only the distinct ones).

The product of its digits is 1889568, while the sum is 54.

The spelling of 63696169161 in words is "sixty-three billion, six hundred ninety-six million, one hundred sixty-nine thousand, one hundred sixty-one".