68002660648402 has 4 divisors (see below), whose sum is σ = 102003990972606. Its totient is φ = 34001330324200.

The previous prime is 68002660648327. The next prime is 68002660648457. The reversal of 68002660648402 is 20484606620086.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 42096077446201 + 25906583202201 = 6488149^2 + 5089851^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 68002660648402.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17000665162099 + ... + 17000665162102.

Almost surely, 2^{68002660648402} is an apocalyptic number.

68002660648402 is a deficient number, since it is larger than the sum of its proper divisors (34001330324204).

68002660648402 is a wasteful number, since it uses less digits than its factorization.

68002660648402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34001330324203.

The product of its (nonzero) digits is 5308416, while the sum is 52.

The spelling of 68002660648402 in words is "sixty-eight trillion, two billion, six hundred sixty million, six hundred forty-eight thousand, four hundred two".