30213336645 has 12 divisors (see below), whose sum is σ = 52369783596. Its totient is φ = 16113779520.

The previous prime is 30213336631. The next prime is 30213336667. The reversal of 30213336645 is 54663331203.

30213336645 is a `hidden beast` number, since 3 + 0 + 2 + 1 + 3 + 3 + 3 + 6 + 645 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 4188548961 + 26024787684 = 64719^2 + 161322^2 .

It is not a de Polignac number, because 30213336645 - 2¹⁵ = 30213303877 is a prime.

It is a super-2 number, since 2×30213336645² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 335703696 + ... + 335703785.

It is an arithmetic number, because the mean of its divisors is an integer number (4364148633).

Almost surely, 2^30213336645 is an apocalyptic number.

It is an amenable number.

30213336645 is a deficient number, since it is larger than the sum of its proper divisors (22156446951).

30213336645 is a wasteful number, since it uses less digits than its factorization.

30213336645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 671407492 (or 671407489 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 36.

Adding to 30213336645 its reverse (54663331203), we get a palindrome (84876667848).

The spelling of 30213336645 in words is "thirty billion, two hundred thirteen million, three hundred thirty-six thousand, six hundred forty-five".