30920030645 has 16 divisors (see below), whose sum is σ = 42414153600. Its totient is φ = 21197536704.

The previous prime is 30920030641. The next prime is 30920030681. The reversal of 30920030645 is 54603002903.

It is a cyclic number.

It is not a de Polignac number, because 30920030645 - 2² = 30920030641 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30920030641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62114 + ... + 256316.

It is an arithmetic number, because the mean of its divisors is an integer number (2650884600).

Almost surely, 2^30920030645 is an apocalyptic number.

30920030645 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

30920030645 is a deficient number, since it is larger than the sum of its proper divisors (11494122955).

30920030645 is a wasteful number, since it uses less digits than its factorization.

30920030645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198764.

The product of its (nonzero) digits is 19440, while the sum is 32.

The spelling of 30920030645 in words is "thirty billion, nine hundred twenty million, thirty thousand, six hundred forty-five".