12644877046 has 16 divisors (see below), whose sum is σ = 19000819728. Its totient is φ = 6311282400.

The previous prime is 12644877013. The next prime is 12644877053. The reversal of 12644877046 is 64077844621.

It is a super-2 number, since 2×12644877046² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

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, 4711621 + ... + 4714303.

It is an arithmetic number, because the mean of its divisors is an integer number (1187551233).

Almost surely, 2^12644877046 is an apocalyptic number.

12644877046 is a deficient number, since it is larger than the sum of its proper divisors (6355942682).

12644877046 is a wasteful number, since it uses less digits than its factorization.

12644877046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5967.

The product of its (nonzero) digits is 1806336, while the sum is 49.

The spelling of 12644877046 in words is "twelve billion, six hundred forty-four million, eight hundred seventy-seven thousand, forty-six".