191199448804 has 48 divisors (see below), whose sum is σ = 412331528448. Its totient is φ = 75544322688.

The previous prime is 191199448729. The next prime is 191199448819. The reversal of 191199448804 is 408844991191.

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, 39424 + ... + 619639.

It is an arithmetic number, because the mean of its divisors is an integer number (8590240176).

Almost surely, 2^191199448804 is an apocalyptic number.

191199448804 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

191199448804 is an abundant number, since it is smaller than the sum of its proper divisors (221132079644).

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

191199448804 is a wasteful number, since it uses less digits than its factorization.

191199448804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 659884 (or 659882 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 58.

The spelling of 191199448804 in words is "one hundred ninety-one billion, one hundred ninety-nine million, four hundred forty-eight thousand, eight hundred four".