199226837813640 has 512 divisors, whose sum is σ = 782072566087680. Its totient is φ = 39448452206592.

The previous prime is 199226837813623. The next prime is 199226837813657. The reversal of 199226837813640 is 46318738622991.

It is an interprime number because it is at equal distance from previous prime (199226837813623) and next prime (199226837813657).

It is a Harshad number since it is a multiple of its sum of digits (69).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 5828209 + ... + 20794751.

It is an arithmetic number, because the mean of its divisors is an integer number (1527485480640).

Almost surely, 2^{199226837813640} is an apocalyptic number.

199226837813640 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 199226837813640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (391036283043840).

199226837813640 is an abundant number, since it is smaller than the sum of its proper divisors (582845728274040).

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

199226837813640 is a wasteful number, since it uses less digits than its factorization.

199226837813640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14966653 (or 14966649 counting only the distinct ones).

The product of its (nonzero) digits is 188116992, while the sum is 69.

The spelling of 199226837813640 in words is "one hundred ninety-nine trillion, two hundred twenty-six billion, eight hundred thirty-seven million, eight hundred thirteen thousand, six hundred forty".