20708543814108 has 48 divisors (see below), whose sum is σ = 51162607510560. Its totient is φ = 6496757069824.

The previous prime is 20708543814089. The next prime is 20708543814109. The reversal of 20708543814108 is 80141834580702.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20708543814109) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58586608 + ... + 58939016.

It is an arithmetic number, because the mean of its divisors is an integer number (1065887656470).

Almost surely, 2^{20708543814108} is an apocalyptic number.

It is an amenable number.

20708543814108 is an abundant number, since it is smaller than the sum of its proper divisors (30454063696452).

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

20708543814108 is a wasteful number, since it uses less digits than its factorization.

20708543814108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 640486 (or 640484 counting only the distinct ones).

The product of its (nonzero) digits is 1720320, while the sum is 51.

The spelling of 20708543814108 in words is "twenty trillion, seven hundred eight billion, five hundred forty-three million, eight hundred fourteen thousand, one hundred eight".