12640572577 has 8 divisors (see below), whose sum is σ = 13103101440. Its totient is φ = 12179820240.

The previous prime is 12640572533. The next prime is 12640572583. The reversal of 12640572577 is 77527504621.

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

It is a cyclic number.

It is not a de Polignac number, because 12640572577 - 2³¹ = 10493088929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12640572877) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 429633 + ... + 458110.

It is an arithmetic number, because the mean of its divisors is an integer number (1637887680).

Almost surely, 2^12640572577 is an apocalyptic number.

It is an amenable number.

12640572577 is a deficient number, since it is larger than the sum of its proper divisors (462528863).

12640572577 is an equidigital number, since it uses as much as digits as its factorization.

12640572577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 888263.

The product of its (nonzero) digits is 823200, while the sum is 46.

The spelling of 12640572577 in words is "twelve billion, six hundred forty million, five hundred seventy-two thousand, five hundred seventy-seven".