154438074666 has 48 divisors (see below), whose sum is σ = 344698237728. Its totient is φ = 49936629600.

The previous prime is 154438074643. The next prime is 154438074667. The reversal of 154438074666 is 666470834451.

It is a super-2 number, since 2×154438074666² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (154438074667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 129840 + ... + 570731.

It is an arithmetic number, because the mean of its divisors is an integer number (7181213286).

Almost surely, 2^154438074666 is an apocalyptic number.

154438074666 is an abundant number, since it is smaller than the sum of its proper divisors (190260163062).

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

154438074666 is a wasteful number, since it uses less digits than its factorization.

154438074666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 700947 (or 700944 counting only the distinct ones).

The product of its (nonzero) digits is 11612160, while the sum is 54.

The spelling of 154438074666 in words is "one hundred fifty-four billion, four hundred thirty-eight million, seventy-four thousand, six hundred sixty-six".