20356441820500 has 24 divisors (see below), whose sum is σ = 44458468937064. Its totient is φ = 8142576728000.

The previous prime is 20356441820489. The next prime is 20356441820513. The reversal of 20356441820500 is 502814465302.

It can be written as a sum of positive squares in 4 ways, for example, as 1453042198084 + 18903399622416 = 1205422^2 + 4347804^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20356441321 + ... + 20356442320.

It is an arithmetic number, because the mean of its divisors is an integer number (1852436205711).

Almost surely, 2^{20356441820500} is an apocalyptic number.

20356441820500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20356441820500 is an abundant number, since it is smaller than the sum of its proper divisors (24102027116564).

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

20356441820500 is a wasteful number, since it uses less digits than its factorization.

20356441820500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40712883660 (or 40712883648 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 40.

The spelling of 20356441820500 in words is "twenty trillion, three hundred fifty-six billion, four hundred forty-one million, eight hundred twenty thousand, five hundred".