30732829821 has 12 divisors (see below), whose sum is σ = 46728279520. Its totient is φ = 19410208200.

The previous prime is 30732829819. The next prime is 30732829843. The reversal of 30732829821 is 12892823703.

30732829821 is a `hidden beast` number, since 30 + 7 + 328 + 298 + 2 + 1 = 666.

It is not a de Polignac number, because 30732829821 - 2¹ = 30732829819 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30732829801) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 89861905 + ... + 89862246.

Almost surely, 2^30732829821 is an apocalyptic number.

It is an amenable number.

30732829821 is a deficient number, since it is larger than the sum of its proper divisors (15995449699).

30732829821 is a wasteful number, since it uses less digits than its factorization.

30732829821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179724176 (or 179724173 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The spelling of 30732829821 in words is "thirty billion, seven hundred thirty-two million, eight hundred twenty-nine thousand, eight hundred twenty-one".