12624394690 has 16 divisors (see below), whose sum is σ = 23096434680. Its totient is φ = 4966974720.

The previous prime is 12624394663. The next prime is 12624394711. The reversal of 12624394690 is 9649342621.

It can be written as a sum of positive squares in 4 ways, for example, as 8012219121 + 4612175569 = 89511^2 + 67913^2 .

It is a super-2 number, since 2×12624394690² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12624394690.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10347255 + ... + 10348474.

Almost surely, 2^12624394690 is an apocalyptic number.

12624394690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12624394690 is a deficient number, since it is larger than the sum of its proper divisors (10472039990).

12624394690 is a wasteful number, since it uses less digits than its factorization.

12624394690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20695797.

The product of its (nonzero) digits is 559872, while the sum is 46.

The spelling of 12624394690 in words is "twelve billion, six hundred twenty-four million, three hundred ninety-four thousand, six hundred ninety".