20754834680688 has 20 divisors (see below), whose sum is σ = 53616656258568. Its totient is φ = 6918278226880.

The previous prime is 20754834680677. The next prime is 20754834680689. The reversal of 20754834680688 is 88608643845702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20754834680689) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 216196194543 + ... + 216196194638.

Almost surely, 2^{20754834680688} is an apocalyptic number.

It is an amenable number.

20754834680688 is an abundant number, since it is smaller than the sum of its proper divisors (32861821577880).

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

20754834680688 is a wasteful number, since it uses less digits than its factorization.

20754834680688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432392389192 (or 432392389186 counting only the distinct ones).

The product of its (nonzero) digits is 495452160, while the sum is 69.

The spelling of 20754834680688 in words is "twenty trillion, seven hundred fifty-four billion, eight hundred thirty-four million, six hundred eighty thousand, six hundred eighty-eight".