20539529160 has 128 divisors (see below), whose sum is σ = 62521804800. Its totient is φ = 5397200640.

The previous prime is 20539529137. The next prime is 20539529189. The reversal of 20539529160 is 6192593502.

It is a super-2 number, since 2×20539529160² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5562915 + ... + 5566605.

It is an arithmetic number, because the mean of its divisors is an integer number (488451600).

Almost surely, 2^20539529160 is an apocalyptic number.

20539529160 is a gapful number since it is divisible by the number (20) 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 20539529160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31260902400).

20539529160 is an abundant number, since it is smaller than the sum of its proper divisors (41982275640).

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

20539529160 is a wasteful number, since it uses less digits than its factorization.

20539529160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4371 (or 4367 counting only the distinct ones).

The product of its (nonzero) digits is 145800, while the sum is 42.

The spelling of 20539529160 in words is "twenty billion, five hundred thirty-nine million, five hundred twenty-nine thousand, one hundred sixty".