13680462002 has 4 divisors (see below), whose sum is σ = 20520693006. Its totient is φ = 6840231000.

The previous prime is 13680461989. The next prime is 13680462007. The reversal of 13680462002 is 20026408631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20026408631 = 41 ⋅488448991.

It can be written as a sum of positive squares in only one way, i.e., 7447517401 + 6232944601 = 86299^2 + 78949^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 13680462002.

It is not an unprimeable number, because it can be changed into a prime (13680462007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3420115499 + ... + 3420115502.

Almost surely, 2^13680462002 is an apocalyptic number.

13680462002 is a deficient number, since it is larger than the sum of its proper divisors (6840231004).

13680462002 is an equidigital number, since it uses as much as digits as its factorization.

13680462002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6840231003.

The product of its (nonzero) digits is 13824, while the sum is 32.

The spelling of 13680462002 in words is "thirteen billion, six hundred eighty million, four hundred sixty-two thousand, two".