63656132646 has 16 divisors (see below), whose sum is σ = 127361394864. Its totient is φ = 21210522624.

The previous prime is 63656132587. The next prime is 63656132693. The reversal of 63656132646 is 64623165636.

It is a super-2 number, since 2×63656132646² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 63656132595 and 63656132604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2030211 + ... + 2061326.

It is an arithmetic number, because the mean of its divisors is an integer number (7960087179).

Almost surely, 2^63656132646 is an apocalyptic number.

63656132646 is an abundant number, since it is smaller than the sum of its proper divisors (63705262218).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

63656132646 is a wasteful number, since it uses less digits than its factorization.

63656132646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4094135.

The product of its digits is 2799360, while the sum is 48.

The spelling of 63656132646 in words is "sixty-three billion, six hundred fifty-six million, one hundred thirty-two thousand, six hundred forty-six".