20534322500 has 60 divisors (see below), whose sum is σ = 46353162240. Its totient is φ = 7948740000.

The previous prime is 20534322499. The next prime is 20534322547. The reversal of 20534322500 is 522343502.

It is a self number, because there is not a number n which added to its sum of digits gives 20534322500.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 54980 + ... + 209979.

It is an arithmetic number, because the mean of its divisors is an integer number (772552704).

Almost surely, 2^20534322500 is an apocalyptic number.

20534322500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20534322500 is an abundant number, since it is smaller than the sum of its proper divisors (25818839740).

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

20534322500 is a wasteful number, since it uses less digits than its factorization.

20534322500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265014 (or 264997 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 26.

The spelling of 20534322500 in words is "twenty billion, five hundred thirty-four million, three hundred twenty-two thousand, five hundred".