12640253004 has 18 divisors (see below), whose sum is σ = 31951750740. Its totient is φ = 4213417656.

The previous prime is 12640252957. The next prime is 12640253033. The reversal of 12640253004 is 40035204621.

12640253004 is a `hidden beast` number, since 12 + 640 + 2 + 5 + 3 + 0 + 0 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 175559034 + ... + 175559105.

Almost surely, 2^12640253004 is an apocalyptic number.

It is an amenable number.

12640253004 is an abundant number, since it is smaller than the sum of its proper divisors (19311497736).

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

12640253004 is a wasteful number, since it uses less digits than its factorization.

12640253004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351118149 (or 351118144 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

Adding to 12640253004 its reverse (40035204621), we get a palindrome (52675457625).

The spelling of 12640253004 in words is "twelve billion, six hundred forty million, two hundred fifty-three thousand, four".