20638062996 has 12 divisors (see below), whose sum is σ = 48155480352. Its totient is φ = 6879354328.

The previous prime is 20638062989. The next prime is 20638063049. The reversal of 20638062996 is 69926083602.

It is a tau number, because it is divible by the number of its divisors (12).

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 3 ways as a sum of consecutive naturals, for example, 859919280 + ... + 859919303.

It is an arithmetic number, because the mean of its divisors is an integer number (4012956696).

Almost surely, 2^20638062996 is an apocalyptic number.

It is an amenable number.

20638062996 is an abundant number, since it is smaller than the sum of its proper divisors (27517417356).

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

20638062996 is a wasteful number, since it uses less digits than its factorization.

20638062996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1719838590 (or 1719838588 counting only the distinct ones).

The product of its (nonzero) digits is 1679616, while the sum is 51.

The spelling of 20638062996 in words is "twenty billion, six hundred thirty-eight million, sixty-two thousand, nine hundred ninety-six".