12664213250 has 128 divisors (see below), whose sum is σ = 26440779456. Its totient is φ = 4512000000.

The previous prime is 12664213213. The next prime is 12664213307. The reversal of 12664213250 is 5231246621.

It can be written as a sum of positive squares in 32 ways, for example, as 5622150361 + 7042062889 = 74981^2 + 83917^2 .

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 13457780 + ... + 13458720.

Almost surely, 2^12664213250 is an apocalyptic number.

12664213250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12664213250 is an abundant number, since it is smaller than the sum of its proper divisors (13776566206).

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

12664213250 is a wasteful number, since it uses less digits than its factorization.

12664213250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1113 (or 1103 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

Adding to 12664213250 its reverse (5231246621), we get a palindrome (17895459871).

The spelling of 12664213250 in words is "twelve billion, six hundred sixty-four million, two hundred thirteen thousand, two hundred fifty".