199554205312 has 64 divisors (see below), whose sum is σ = 495646021440. Its totient is φ = 77748387840.

The previous prime is 199554205303. The next prime is 199554205327. The reversal of 199554205312 is 213502455991.

It is a tau number, because it is divible by the number of its divisors (64).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10113633 + ... + 10133344.

It is an arithmetic number, because the mean of its divisors is an integer number (7744469085).

Almost surely, 2^199554205312 is an apocalyptic number.

It is an amenable number.

199554205312 is an abundant number, since it is smaller than the sum of its proper divisors (296091816128).

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

199554205312 is a wasteful number, since it uses less digits than its factorization.

199554205312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20247009 (or 20246997 counting only the distinct ones).

The product of its (nonzero) digits is 486000, while the sum is 46.

The spelling of 199554205312 in words is "one hundred ninety-nine billion, five hundred fifty-four million, two hundred five thousand, three hundred twelve".