199889453554 has 8 divisors (see below), whose sum is σ = 342667634688. Its totient is φ = 85666908660.

The previous prime is 199889453539. The next prime is 199889453557. The reversal of 199889453554 is 455354988991.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (199889453557) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7138909042 + ... + 7138909069.

It is an arithmetic number, because the mean of its divisors is an integer number (42833454336).

Almost surely, 2^199889453554 is an apocalyptic number.

199889453554 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

199889453554 is a deficient number, since it is larger than the sum of its proper divisors (142778181134).

199889453554 is a wasteful number, since it uses less digits than its factorization.

199889453554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14277818120.

The product of its digits is 279936000, while the sum is 70.

The spelling of 199889453554 in words is "one hundred ninety-nine billion, eight hundred eighty-nine million, four hundred fifty-three thousand, five hundred fifty-four".