154851284772 has 36 divisors (see below), whose sum is σ = 397846521436. Its totient is φ = 50770912320.

The previous prime is 154851284771. The next prime is 154851284831. The reversal of 154851284772 is 277482158451.

154851284772 is a `hidden beast` number, since 1 + 5 + 48 + 5 + 128 + 477 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 85436951616 + 69414333156 = 292296^2 + 263466^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (154851284771) 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 11 ways as a sum of consecutive naturals, for example, 35255383 + ... + 35259774.

Almost surely, 2^154851284772 is an apocalyptic number.

154851284772 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

154851284772 is an abundant number, since it is smaller than the sum of its proper divisors (242995236664).

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

154851284772 is a wasteful number, since it uses less digits than its factorization.

154851284772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70515228 (or 70515223 counting only the distinct ones).

The product of its digits is 5017600, while the sum is 54.

It can be divided in two parts, 1548512 and 84772, that added together give a square (1633284 = 1278²).

The spelling of 154851284772 in words is "one hundred fifty-four billion, eight hundred fifty-one million, two hundred eighty-four thousand, seven hundred seventy-two".