13256646662 has 16 divisors (see below), whose sum is σ = 22876184832. Its totient is φ = 5643793800.

The previous prime is 13256646659. The next prime is 13256646671. The reversal of 13256646662 is 26664665231.

It is a happy number.

It is a super-2 number, since 2×13256646662² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3133328 + ... + 3137555.

It is an arithmetic number, because the mean of its divisors is an integer number (1429761552).

Almost surely, 2^13256646662 is an apocalyptic number.

13256646662 is a deficient number, since it is larger than the sum of its proper divisors (9619538170).

13256646662 is a wasteful number, since it uses less digits than its factorization.

13256646662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6271043.

The product of its digits is 1866240, while the sum is 47.

The spelling of 13256646662 in words is "thirteen billion, two hundred fifty-six million, six hundred forty-six thousand, six hundred sixty-two".