63696991269 has 16 divisors (see below), whose sum is σ = 88688812032. Its totient is φ = 40587703728.

The previous prime is 63696991153. The next prime is 63696991271. The reversal of 63696991269 is 96219969636.

63696991269 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 63696991269 - 2¹¹ = 63696989221 is a prime.

It is a super-2 number, since 2×63696991269² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63696991069) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 256269 + ... + 439394.

It is an arithmetic number, because the mean of its divisors is an integer number (5543050752).

Almost surely, 2^63696991269 is an apocalyptic number.

63696991269 is a gapful number since it is divisible by the number (69) formed by its first and last digit.

It is an amenable number.

63696991269 is a deficient number, since it is larger than the sum of its proper divisors (24991820763).

63696991269 is a wasteful number, since it uses less digits than its factorization.

63696991269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 697016.

The product of its digits is 51018336, while the sum is 66.

The spelling of 63696991269 in words is "sixty-three billion, six hundred ninety-six million, nine hundred ninety-one thousand, two hundred sixty-nine".