30478752549 has 64 divisors (see below), whose sum is σ = 57515673600. Its totient is φ = 15529169664.

The previous prime is 30478752529. The next prime is 30478752581. The reversal of 30478752549 is 94525787403.

It is a happy number.

30478752549 is a `hidden beast` number, since 3 + 0 + 4 + 78 + 7 + 525 + 49 = 666.

It is not a de Polignac number, because 30478752549 - 2¹² = 30478748453 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 30478752495 and 30478752504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30478752529) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 188587 + ... + 310680.

It is an arithmetic number, because the mean of its divisors is an integer number (898682400).

Almost surely, 2^30478752549 is an apocalyptic number.

It is an amenable number.

30478752549 is a deficient number, since it is larger than the sum of its proper divisors (27036921051).

30478752549 is a wasteful number, since it uses less digits than its factorization.

30478752549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499319 (or 499313 counting only the distinct ones).

The product of its (nonzero) digits is 8467200, while the sum is 54.

The spelling of 30478752549 in words is "thirty billion, four hundred seventy-eight million, seven hundred fifty-two thousand, five hundred forty-nine".