20008969786 has 16 divisors (see below), whose sum is σ = 32344704000. Its totient is φ = 9228474288.

The previous prime is 20008969751. The next prime is 20008969789. The reversal of 20008969786 is 68796980002.

It is not an unprimeable number, because it can be changed into a prime (20008969789) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 229986 + ... + 304813.

It is an arithmetic number, because the mean of its divisors is an integer number (2021544000).

Almost surely, 2^20008969786 is an apocalyptic number.

20008969786 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

20008969786 is a deficient number, since it is larger than the sum of its proper divisors (12335734214).

20008969786 is a wasteful number, since it uses less digits than its factorization.

20008969786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 536253.

The product of its (nonzero) digits is 2612736, while the sum is 55.

The spelling of 20008969786 in words is "twenty billion, eight million, nine hundred sixty-nine thousand, seven hundred eighty-six".