30142620666 has 32 divisors (see below), whose sum is σ = 67032766080. Its totient is φ = 10040165568.

The previous prime is 30142620653. The next prime is 30142620713. The reversal of 30142620666 is 66602624103.

It is a super-2 number, since 2×30142620666² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 30142620666.

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 15 ways as a sum of consecutive naturals, for example, 130351 + ... + 277986.

It is an arithmetic number, because the mean of its divisors is an integer number (2094773940).

Almost surely, 2^30142620666 is an apocalyptic number.

30142620666 is an abundant number, since it is smaller than the sum of its proper divisors (36890145414).

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

30142620666 is a wasteful number, since it uses less digits than its factorization.

30142620666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409715 (or 409709 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 36.

The spelling of 30142620666 in words is "thirty billion, one hundred forty-two million, six hundred twenty thousand, six hundred sixty-six".