20639063462 has 32 divisors (see below), whose sum is σ = 33509935200. Its totient is φ = 9500467968.

The previous prime is 20639063413. The next prime is 20639063521. The reversal of 20639063462 is 26436093602.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1190714 + ... + 1207922.

It is an arithmetic number, because the mean of its divisors is an integer number (1047185475).

Almost surely, 2^20639063462 is an apocalyptic number.

20639063462 is a deficient number, since it is larger than the sum of its proper divisors (12870871738).

20639063462 is a wasteful number, since it uses less digits than its factorization.

20639063462 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18120.

The product of its (nonzero) digits is 279936, while the sum is 41.

The spelling of 20639063462 in words is "twenty billion, six hundred thirty-nine million, sixty-three thousand, four hundred sixty-two".