20688021826424 has 32 divisors (see below), whose sum is σ = 39526552800000. Its totient is φ = 10148310445152.

The previous prime is 20688021826363. The next prime is 20688021826429. The reversal of 20688021826424 is 42462812088602.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20688021826429) 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, 43682864 + ... + 44153919.

It is an arithmetic number, because the mean of its divisors is an integer number (1235204775000).

Almost surely, 2^{20688021826424} is an apocalyptic number.

It is an amenable number.

20688021826424 is a deficient number, since it is larger than the sum of its proper divisors (18838530973576).

20688021826424 is a wasteful number, since it uses less digits than its factorization.

20688021826424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87837347 (or 87837343 counting only the distinct ones).

The product of its (nonzero) digits is 4718592, while the sum is 53.

The spelling of 20688021826424 in words is "twenty trillion, six hundred eighty-eight billion, twenty-one million, eight hundred twenty-six thousand, four hundred twenty-four".