30508988985 has 64 divisors (see below), whose sum is σ = 56679659520. Its totient is φ = 15746400000.

The previous prime is 30508988977. The next prime is 30508989029. The reversal of 30508988985 is 58988980503.

30508988985 is a `hidden beast` number, since 30 + 508 + 9 + 8 + 8 + 98 + 5 = 666.

It is not a de Polignac number, because 30508988985 - 2³ = 30508988977 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 293985 + ... + 383985.

It is an arithmetic number, because the mean of its divisors is an integer number (885619680).

Almost surely, 2^30508988985 is an apocalyptic number.

It is an amenable number.

30508988985 is a deficient number, since it is larger than the sum of its proper divisors (26170670535).

30508988985 is an frugal number, since it uses more digits than its factorization.

30508988985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90058 (or 90040 counting only the distinct ones).

The product of its (nonzero) digits is 24883200, while the sum is 63.

The spelling of 30508988985 in words is "thirty billion, five hundred eight million, nine hundred eighty-eight thousand, nine hundred eighty-five".