20573816666600 has 192 divisors, whose sum is σ = 51474495600000. Its totient is φ = 7619902709760.

The previous prime is 20573816666593. The next prime is 20573816666621. The reversal of 20573816666600 is 666661837502.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 60046571 + ... + 60388229.

It is an arithmetic number, because the mean of its divisors is an integer number (268096331250).

Almost surely, 2^{20573816666600} is an apocalyptic number.

20573816666600 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 20573816666600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25737247800000).

20573816666600 is an abundant number, since it is smaller than the sum of its proper divisors (30900678933400).

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

20573816666600 is a wasteful number, since it uses less digits than its factorization.

20573816666600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341980 (or 341971 counting only the distinct ones).

The product of its (nonzero) digits is 13063680, while the sum is 56.

The spelling of 20573816666600 in words is "twenty trillion, five hundred seventy-three billion, eight hundred sixteen million, six hundred sixty-six thousand, six hundred".