20424486680 has 64 divisors (see below), whose sum is σ = 51641876160. Its totient is φ = 7213459968.

The previous prime is 20424486631. The next prime is 20424486683. The reversal of 20424486680 is 8668442402.

It is a super-2 number, since 2×20424486680² (a number of 21 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20424486683) 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, 841907 + ... + 865826.

It is an arithmetic number, because the mean of its divisors is an integer number (806904315).

Almost surely, 2^20424486680 is an apocalyptic number.

20424486680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20424486680 is an abundant number, since it is smaller than the sum of its proper divisors (31217389480).

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

20424486680 is a wasteful number, since it uses less digits than its factorization.

20424486680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1707780 (or 1707776 counting only the distinct ones).

The product of its (nonzero) digits is 589824, while the sum is 44.

The spelling of 20424486680 in words is "twenty billion, four hundred twenty-four million, four hundred eighty-six thousand, six hundred eighty".