30005553906 has 12 divisors (see below), whose sum is σ = 65012033502. Its totient is φ = 10001851296.

The previous prime is 30005553841. The next prime is 30005553913. The reversal of 30005553906 is 60935550003.

It can be written as a sum of positive squares in only one way, i.e., 23320038681 + 6685515225 = 152709^2 + 81765^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 833487591 + ... + 833487626.

Almost surely, 2^30005553906 is an apocalyptic number.

30005553906 is an abundant number, since it is smaller than the sum of its proper divisors (35006479596).

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

30005553906 is a wasteful number, since it uses less digits than its factorization.

30005553906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1666975225 (or 1666975222 counting only the distinct ones).

The product of its (nonzero) digits is 60750, while the sum is 36.

The spelling of 30005553906 in words is "thirty billion, five million, five hundred fifty-three thousand, nine hundred six".