30640102065 has 48 divisors (see below), whose sum is σ = 58316364288. Its totient is φ = 15380119296.

The previous prime is 30640102063. The next prime is 30640102091. The reversal of 30640102065 is 56020104603.

30640102065 is a `hidden beast` number, since 3 + 0 + 640 + 10 + 2 + 0 + 6 + 5 = 666.

It is not a de Polignac number, because 30640102065 - 2¹ = 30640102063 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (30640102063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 721057 + ... + 762366.

It is an arithmetic number, because the mean of its divisors is an integer number (1214924256).

Almost surely, 2^30640102065 is an apocalyptic number.

It is an amenable number.

30640102065 is a deficient number, since it is larger than the sum of its proper divisors (27676262223).

30640102065 is a wasteful number, since it uses less digits than its factorization.

30640102065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1483460 (or 1483448 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

Adding to 30640102065 its reverse (56020104603), we get a palindrome (86660206668).

The spelling of 30640102065 in words is "thirty billion, six hundred forty million, one hundred two thousand, sixty-five".