30143472578 has 18 divisors (see below), whose sum is σ = 45478593849. Its totient is φ = 14984448952.

The previous prime is 30143472571. The next prime is 30143472617. The reversal of 30143472578 is 87527434103.

It can be written as a sum of positive squares in 2 ways, for example, as 21876480649 + 8266991929 = 147907^2 + 90923^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=122767.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30143472571) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 71941253 + ... + 71941671.

Almost surely, 2^30143472578 is an apocalyptic number.

30143472578 is a deficient number, since it is larger than the sum of its proper divisors (15335121271).

30143472578 is an frugal number, since it uses more digits than its factorization.

30143472578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1426 (or 714 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 44.

The spelling of 30143472578 in words is "thirty billion, one hundred forty-three million, four hundred seventy-two thousand, five hundred seventy-eight".