63675857636 has 12 divisors (see below), whose sum is σ = 112536046140. Its totient is φ = 31522701600.

The previous prime is 63675857617. The next prime is 63675857639.

63675857636 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 2 ways, for example, as 32307905536 + 31367952100 = 179744^2 + 177110^2 .

It is a super-2 number, since 2×63675857636² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (63675857639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78806351 + ... + 78807158.

It is an arithmetic number, because the mean of its divisors is an integer number (9378003845).

Almost surely, 2^63675857636 is an apocalyptic number.

It is an amenable number.

63675857636 is a deficient number, since it is larger than the sum of its proper divisors (48860188504).

63675857636 is a wasteful number, since it uses less digits than its factorization.

63675857636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157613614 (or 157613612 counting only the distinct ones).

The product of its digits is 114307200, while the sum is 62.

The spelling of 63675857636 in words is "sixty-three billion, six hundred seventy-five million, eight hundred fifty-seven thousand, six hundred thirty-six".