154278538472 has 16 divisors (see below), whose sum is σ = 289366808100. Its totient is φ = 77114056320.

The previous prime is 154278538471. The next prime is 154278538483. The reversal of 154278538472 is 274835872451.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 115930716196 + 38347822276 = 340486^2 + 195826^2 .

It is a super-4 number, since 4×154278538472⁴ (a number of 46 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (154278538471) 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 3 ways as a sum of consecutive naturals, for example, 3125597 + ... + 3174572.

Almost surely, 2^154278538472 is an apocalyptic number.

It is an amenable number.

154278538472 is a deficient number, since it is larger than the sum of its proper divisors (135088269628).

154278538472 is a wasteful number, since it uses less digits than its factorization.

154278538472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6303236 (or 6303232 counting only the distinct ones).

The product of its digits is 15052800, while the sum is 56.

The spelling of 154278538472 in words is "one hundred fifty-four billion, two hundred seventy-eight million, five hundred thirty-eight thousand, four hundred seventy-two".