20869347486888 has 48 divisors (see below), whose sum is σ = 56521909915380. Its totient is φ = 6956355565824.

The previous prime is 20869347486887. The next prime is 20869347486913. The reversal of 20869347486888 is 88868474396802.

20869347486888 is a `hidden beast` number, since 2 + 0 + 8 + 6 + 9 + 3 + 474 + 8 + 68 + 88 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 18975415542084 + 1893931944804 = 4356078^2 + 1376202^2 .

It is not an unprimeable number, because it can be changed into a prime (20869347486887) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3545356 + ... + 7369412.

Almost surely, 2^{20869347486888} is an apocalyptic number.

It is an amenable number.

20869347486888 is an abundant number, since it is smaller than the sum of its proper divisors (35652562428492).

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

20869347486888 is a wasteful number, since it uses less digits than its factorization.

20869347486888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3899866 (or 3899859 counting only the distinct ones).

The product of its (nonzero) digits is 7134511104, while the sum is 81.

The spelling of 20869347486888 in words is "twenty trillion, eight hundred sixty-nine billion, three hundred forty-seven million, four hundred eighty-six thousand, eight hundred eighty-eight".