12640255010 has 16 divisors (see below), whose sum is σ = 22767766200. Its totient is φ = 5052700416.

The previous prime is 12640254997. The next prime is 12640255013. The reversal of 12640255010 is 1055204621.

It can be written as a sum of positive squares in 4 ways, for example, as 3618864649 + 9021390361 = 60157^2 + 94981^2 .

It is not an unprimeable number, because it can be changed into a prime (12640255013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 409565 + ... + 439344.

Almost surely, 2^12640255010 is an apocalyptic number.

12640255010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12640255010 is a deficient number, since it is larger than the sum of its proper divisors (10127511190).

12640255010 is a wasteful number, since it uses less digits than its factorization.

12640255010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 850405.

The product of its (nonzero) digits is 2400, while the sum is 26.

Adding to 12640255010 its reverse (1055204621), we get a palindrome (13695459631).

The spelling of 12640255010 in words is "twelve billion, six hundred forty million, two hundred fifty-five thousand, ten".