199084434540 has 96 divisors (see below), whose sum is σ = 581788279296. Its totient is φ = 50770874880.

The previous prime is 199084434503. The next prime is 199084434599. The reversal of 199084434540 is 45434480991.

It is a super-2 number, since 2×199084434540² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8987919 + ... + 9010041.

It is an arithmetic number, because the mean of its divisors is an integer number (6060294576).

Almost surely, 2^199084434540 is an apocalyptic number.

199084434540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

199084434540 is an abundant number, since it is smaller than the sum of its proper divisors (382703844756).

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

199084434540 is a wasteful number, since it uses less digits than its factorization.

199084434540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28679 (or 28677 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 51.

The spelling of 199084434540 in words is "one hundred ninety-nine billion, eighty-four million, four hundred thirty-four thousand, five hundred forty".