199444919604 has 48 divisors (see below), whose sum is σ = 549009678336. Its totient is φ = 55146060000.

The previous prime is 199444919599. The next prime is 199444919633. The reversal of 199444919604 is 406919444991.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38293272 + ... + 38298479.

It is an arithmetic number, because the mean of its divisors is an integer number (11437701632).

Almost surely, 2^199444919604 is an apocalyptic number.

199444919604 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

199444919604 is an abundant number, since it is smaller than the sum of its proper divisors (349564758732).

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

199444919604 is a wasteful number, since it uses less digits than its factorization.

199444919604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76591796 (or 76591794 counting only the distinct ones).

The product of its (nonzero) digits is 10077696, while the sum is 60.

The spelling of 199444919604 in words is "one hundred ninety-nine billion, four hundred forty-four million, nine hundred nineteen thousand, six hundred four".