12640214602 has 8 divisors (see below), whose sum is σ = 18964460196. Its totient is φ = 6318727872.

The previous prime is 12640214591. The next prime is 12640214621. The reversal of 12640214602 is 20641204621.

It can be written as a sum of positive squares in 2 ways, for example, as 12611065401 + 29149201 = 112299^2 + 5399^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×12640214602² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 678223 + ... + 696610.

Almost surely, 2^12640214602 is an apocalyptic number.

12640214602 is a deficient number, since it is larger than the sum of its proper divisors (6324245594).

12640214602 is a wasteful number, since it uses less digits than its factorization.

12640214602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1379432.

The product of its (nonzero) digits is 4608, while the sum is 28.

The spelling of 12640214602 in words is "twelve billion, six hundred forty million, two hundred fourteen thousand, six hundred two".