20638484062 has 16 divisors (see below), whose sum is σ = 36918531072. Its totient is φ = 8460496440.

The previous prime is 20638484023. The next prime is 20638484063. The reversal of 20638484062 is 26048483602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20638484063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32047014 + ... + 32047657.

It is an arithmetic number, because the mean of its divisors is an integer number (2307408192).

Almost surely, 2^20638484062 is an apocalyptic number.

20638484062 is a deficient number, since it is larger than the sum of its proper divisors (16280047010).

20638484062 is a wasteful number, since it uses less digits than its factorization.

20638484062 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64094703.

The product of its (nonzero) digits is 442368, while the sum is 43.

The spelling of 20638484062 in words is "twenty billion, six hundred thirty-eight million, four hundred eighty-four thousand, sixty-two".