20881673698 has 16 divisors (see below), whose sum is σ = 31500653760. Its totient is φ = 10381624816.

The previous prime is 20881673693. The next prime is 20881673713. The reversal of 20881673698 is 89637618802.

It is not an unprimeable number, because it can be changed into a prime (20881673693) 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, 207240 + ... + 291052.

It is an arithmetic number, because the mean of its divisors is an integer number (1968790860).

Almost surely, 2^20881673698 is an apocalyptic number.

20881673698 is a deficient number, since it is larger than the sum of its proper divisors (10618980062).

20881673698 is a wasteful number, since it uses less digits than its factorization.

20881673698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84521.

The product of its (nonzero) digits is 6967296, while the sum is 58.

The spelling of 20881673698 in words is "twenty billion, eight hundred eighty-one million, six hundred seventy-three thousand, six hundred ninety-eight".