199044401776 has 60 divisors (see below), whose sum is σ = 424527300736. Its totient is φ = 90339701760.

The previous prime is 199044401771. The next prime is 199044401783. The reversal of 199044401776 is 677104440991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199044401771) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1226545 + ... + 1379311.

Almost surely, 2^199044401776 is an apocalyptic number.

199044401776 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 199044401776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (212263650368).

199044401776 is an abundant number, since it is smaller than the sum of its proper divisors (225482898960).

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

199044401776 is a wasteful number, since it uses less digits than its factorization.

199044401776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153470 (or 153453 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 52.

The spelling of 199044401776 in words is "one hundred ninety-nine billion, forty-four million, four hundred one thousand, seven hundred seventy-six".