20463636402 has 36 divisors (see below), whose sum is σ = 48735029070. Its totient is φ = 6201101280.

The previous prime is 20463636379. The next prime is 20463636409.

20463636402 is a `hidden beast` number, since 2 + 0 + 4 + 6 + 3 + 6 + 3 + 640 + 2 = 666.

20463636402 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in only one way, i.e., 18368651961 + 2094984441 = 135531^2 + 45771^2 .

It is not an unprimeable number, because it can be changed into a prime (20463636409) 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 17 ways as a sum of consecutive naturals, for example, 4695627 + ... + 4699982.

Almost surely, 2^20463636402 is an apocalyptic number.

20463636402 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20463636402 is an abundant number, since it is smaller than the sum of its proper divisors (28271392668).

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

20463636402 is a wasteful number, since it uses less digits than its factorization.

20463636402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9395639 (or 9395625 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 36.

The spelling of 20463636402 in words is "twenty billion, four hundred sixty-three million, six hundred thirty-six thousand, four hundred two".