20680057344 has 240 divisors, whose sum is σ = 59522690304. Its totient is φ = 6373171200.

The previous prime is 20680057339. The next prime is 20680057351. The reversal of 20680057344 is 44375008602.

It is a happy number.

It is a super-2 number, since 2×20680057344² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25188454 + ... + 25189274.

Almost surely, 2^20680057344 is an apocalyptic number.

20680057344 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20680057344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29761345152).

20680057344 is an abundant number, since it is smaller than the sum of its proper divisors (38842632960).

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

20680057344 is an equidigital number, since it uses as much as digits as its factorization.

20680057344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 919 (or 880 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 39.

The spelling of 20680057344 in words is "twenty billion, six hundred eighty million, fifty-seven thousand, three hundred forty-four".