199435816454 has 32 divisors (see below), whose sum is σ = 358704279552. Its totient is φ = 81359316000.

The previous prime is 199435816441. The next prime is 199435816477. The reversal of 199435816454 is 454618534991.

199435816454 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 199435816393 and 199435816402.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3740162 + ... + 3793109.

It is an arithmetic number, because the mean of its divisors is an integer number (11209508736).

Almost surely, 2^199435816454 is an apocalyptic number.

199435816454 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

199435816454 is a deficient number, since it is larger than the sum of its proper divisors (159268463098).

199435816454 is a wasteful number, since it uses less digits than its factorization.

199435816454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7533372.

The product of its digits is 18662400, while the sum is 59.

The spelling of 199435816454 in words is "one hundred ninety-nine billion, four hundred thirty-five million, eight hundred sixteen thousand, four hundred fifty-four".