12640217600004 has 48 divisors (see below), whose sum is σ = 30214894570560. Its totient is φ = 4110409730560.

The previous prime is 12640217599949. The next prime is 12640217600027. The reversal of 12640217600004 is 40000671204621.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8189647 + ... + 9609929.

It is an arithmetic number, because the mean of its divisors is an integer number (629476970220).

Almost surely, 2^{12640217600004} is an apocalyptic number.

It is an amenable number.

12640217600004 is an abundant number, since it is smaller than the sum of its proper divisors (17574676970556).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12640217600004 is a wasteful number, since it uses less digits than its factorization.

12640217600004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1438420 (or 1438418 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 33.

Adding to 12640217600004 its reverse (40000671204621), we get a palindrome (52640888804625).

The spelling of 12640217600004 in words is "twelve trillion, six hundred forty billion, two hundred seventeen million, six hundred thousand, four".