199047521398 has 12 divisors (see below), whose sum is σ = 328181657580. Its totient is φ = 90476145980.

The previous prime is 199047521389. The next prime is 199047521401. The reversal of 199047521398 is 893125740991.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 411254968 + ... + 411255451.

It is an arithmetic number, because the mean of its divisors is an integer number (27348471465).

Almost surely, 2^199047521398 is an apocalyptic number.

199047521398 is a deficient number, since it is larger than the sum of its proper divisors (129134136182).

199047521398 is a wasteful number, since it uses less digits than its factorization.

199047521398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 822510443 (or 822510432 counting only the distinct ones).

The product of its (nonzero) digits is 4898880, while the sum is 58.

The spelling of 199047521398 in words is "one hundred ninety-nine billion, forty-seven million, five hundred twenty-one thousand, three hundred ninety-eight".