20568787006 has 4 divisors (see below), whose sum is σ = 30853180512. Its totient is φ = 10284393502.

The previous prime is 20568786991. The next prime is 20568787021. The reversal of 20568787006 is 60078786502.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (20568786991) and next prime (20568787021).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5142196750 + ... + 5142196753.

It is an arithmetic number, because the mean of its divisors is an integer number (7713295128).

Almost surely, 2^20568787006 is an apocalyptic number.

20568787006 is a deficient number, since it is larger than the sum of its proper divisors (10284393506).

20568787006 is a wasteful number, since it uses less digits than its factorization.

20568787006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10284393505.

The product of its (nonzero) digits is 1128960, while the sum is 49.

The spelling of 20568787006 in words is "twenty billion, five hundred sixty-eight million, seven hundred eighty-seven thousand, six".