199434133980 has 72 divisors (see below), whose sum is σ = 606459029904. Its totient is φ = 53049792000.

The previous prime is 199434133979. The next prime is 199434133993. The reversal of 199434133980 is 89331434991.

It is a happy number.

199434133980 is a `hidden beast` number, since 1 + 99 + 434 + 1 + 33 + 98 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1309326 + ... + 1453685.

It is an arithmetic number, because the mean of its divisors is an integer number (8423042082).

Almost surely, 2^199434133980 is an apocalyptic number.

199434133980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

199434133980 is an abundant number, since it is smaller than the sum of its proper divisors (407024895924).

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

199434133980 is a wasteful number, since it uses less digits than its factorization.

199434133980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2763427 (or 2763422 counting only the distinct ones).

The product of its (nonzero) digits is 2519424, while the sum is 54.

The spelling of 199434133980 in words is "one hundred ninety-nine billion, four hundred thirty-four million, one hundred thirty-three thousand, nine hundred eighty".