30455510985 has 24 divisors (see below), whose sum is σ = 52794672840. Its totient is φ = 16241363712.

The previous prime is 30455510983. The next prime is 30455510993. The reversal of 30455510985 is 58901555403.

30455510985 is a `hidden beast` number, since 3 + 0 + 4 + 5 + 551 + 0 + 98 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 627803136 + 29827707849 = 25056^2 + 172707^2 .

It is not a de Polignac number, because 30455510985 - 2¹ = 30455510983 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 30455510985.

It is not an unprimeable number, because it can be changed into a prime (30455510983) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 549987 + ... + 602823.

It is an arithmetic number, because the mean of its divisors is an integer number (2199778035).

Almost surely, 2^30455510985 is an apocalyptic number.

It is an amenable number.

30455510985 is a deficient number, since it is larger than the sum of its proper divisors (22339161855).

30455510985 is a wasteful number, since it uses less digits than its factorization.

30455510985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65657 (or 65654 counting only the distinct ones).

The product of its (nonzero) digits is 540000, while the sum is 45.

The spelling of 30455510985 in words is "thirty billion, four hundred fifty-five million, five hundred ten thousand, nine hundred eighty-five".