20705507282860 has 24 divisors (see below), whose sum is σ = 43496064108000. Its totient is φ = 8279441234304.

The previous prime is 20705507282827. The next prime is 20705507282921. The reversal of 20705507282860 is 6828270550702.

It is a junction number, because it is equal to n+sod(n) for n = 20705507282798 and 20705507282807.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 172543449 + ... + 172663408.

It is an arithmetic number, because the mean of its divisors is an integer number (1812336004500).

Almost surely, 2^{20705507282860} is an apocalyptic number.

20705507282860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20705507282860 is an abundant number, since it is smaller than the sum of its proper divisors (22790556825140).

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

20705507282860 is a wasteful number, since it uses less digits than its factorization.

20705507282860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345209865 (or 345209863 counting only the distinct ones).

The product of its (nonzero) digits is 3763200, while the sum is 52.

The spelling of 20705507282860 in words is "twenty trillion, seven hundred five billion, five hundred seven million, two hundred eighty-two thousand, eight hundred sixty".