19990520226600 has 384 divisors, whose sum is σ = 77270125824000. Its totient is φ = 4153440844800.

The previous prime is 19990520226529. The next prime is 19990520226643. The reversal of 19990520226600 is 662202509991.

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 95 ways as a sum of consecutive naturals, for example, 637498122 + ... + 637529478.

It is an arithmetic number, because the mean of its divisors is an integer number (201224286000).

Almost surely, 2^{19990520226600} is an apocalyptic number.

19990520226600 is a gapful number since it is divisible by the number (10) 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 19990520226600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38635062912000).

19990520226600 is an abundant number, since it is smaller than the sum of its proper divisors (57279605597400).

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

19990520226600 is a wasteful number, since it uses less digits than its factorization.

19990520226600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45193 (or 45184 counting only the distinct ones).

The product of its (nonzero) digits is 1049760, while the sum is 51.

The spelling of 19990520226600 in words is "nineteen trillion, nine hundred ninety billion, five hundred twenty million, two hundred twenty-six thousand, six hundred".