154199208906 has 12 divisors (see below), whose sum is σ = 334098286002. Its totient is φ = 51399736296.

The previous prime is 154199208893. The next prime is 154199208907. The reversal of 154199208906 is 609802991451.

154199208906 is a `hidden beast` number, since 1 + 541 + 9 + 9 + 2 + 0 + 8 + 90 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 138551450625 + 15647758281 = 372225^2 + 125091^2 .

It is not an unprimeable number, because it can be changed into a prime (154199208907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4283311341 + ... + 4283311376.

Almost surely, 2^154199208906 is an apocalyptic number.

154199208906 is an abundant number, since it is smaller than the sum of its proper divisors (179899077096).

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

154199208906 is a wasteful number, since it uses less digits than its factorization.

154199208906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8566622725 (or 8566622722 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 54.

The spelling of 154199208906 in words is "one hundred fifty-four billion, one hundred ninety-nine million, two hundred eight thousand, nine hundred six".