30640254665 has 8 divisors (see below), whose sum is σ = 36792456768. Its totient is φ = 24496102960.

The previous prime is 30640254661. The next prime is 30640254683. The reversal of 30640254665 is 56645204603.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 30640254665 - 2² = 30640254661 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30640254661) 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 7 ways as a sum of consecutive naturals, for example, 2004221 + ... + 2019450.

It is an arithmetic number, because the mean of its divisors is an integer number (4599057096).

Almost surely, 2^30640254665 is an apocalyptic number.

It is an amenable number.

30640254665 is a deficient number, since it is larger than the sum of its proper divisors (6152202103).

30640254665 is a wasteful number, since it uses less digits than its factorization.

30640254665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4025199.

The product of its (nonzero) digits is 518400, while the sum is 41.

The spelling of 30640254665 in words is "thirty billion, six hundred forty million, two hundred fifty-four thousand, six hundred sixty-five".