19990226275320 has 384 divisors, whose sum is σ = 73304829342720. Its totient is φ = 4263928627200.

The previous prime is 19990226275319. The next prime is 19990226275363. The reversal of 19990226275320 is 2357262209991.

It is a happy number.

It is a super-2 number, since 2×19990226275320² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 32169160 + ... + 32784680.

It is an arithmetic number, because the mean of its divisors is an integer number (190897993080).

Almost surely, 2^{19990226275320} is an apocalyptic number.

19990226275320 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 19990226275320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36652414671360).

19990226275320 is an abundant number, since it is smaller than the sum of its proper divisors (53314603067400).

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

19990226275320 is a wasteful number, since it uses less digits than its factorization.

19990226275320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 615647 (or 615602 counting only the distinct ones).

The product of its (nonzero) digits is 7348320, while the sum is 57.

The spelling of 19990226275320 in words is "nineteen trillion, nine hundred ninety billion, two hundred twenty-six million, two hundred seventy-five thousand, three hundred twenty".