199640751180 has 288 divisors, whose sum is σ = 635913815040. Its totient is φ = 46686182400.

The previous prime is 199640751131. The next prime is 199640751199. The reversal of 199640751180 is 81157046991.

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, 35213386 + ... + 35219054.

It is an arithmetic number, because the mean of its divisors is an integer number (2208034080).

Almost surely, 2^199640751180 is an apocalyptic number.

199640751180 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 199640751180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (317956907520).

199640751180 is an abundant number, since it is smaller than the sum of its proper divisors (436273063860).

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

199640751180 is a wasteful number, since it uses less digits than its factorization.

199640751180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5881 (or 5866 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 51.

The spelling of 199640751180 in words is "one hundred ninety-nine billion, six hundred forty million, seven hundred fifty-one thousand, one hundred eighty".