63685263269 has 16 divisors (see below), whose sum is σ = 70739205120. Its totient is φ = 57057073920.

The previous prime is 63685263253. The next prime is 63685263277. The reversal of 63685263269 is 96236258636.

It is a cyclic number.

It is not a de Polignac number, because 63685263269 - 2⁴ = 63685263253 is a prime.

It is a super-2 number, since 2×63685263269² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63685263209) 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, 874709 + ... + 944714.

It is an arithmetic number, because the mean of its divisors is an integer number (4421200320).

Almost surely, 2^63685263269 is an apocalyptic number.

It is an amenable number.

63685263269 is a deficient number, since it is larger than the sum of its proper divisors (7053941851).

63685263269 is a wasteful number, since it uses less digits than its factorization.

63685263269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1819540.

The product of its digits is 16796160, while the sum is 56.

The spelling of 63685263269 in words is "sixty-three billion, six hundred eighty-five million, two hundred sixty-three thousand, two hundred sixty-nine".