2068640282402 has 4 divisors (see below), whose sum is σ = 3102960423606. Its totient is φ = 1034320141200.

The previous prime is 2068640282333. The next prime is 2068640282413. The reversal of 2068640282402 is 2042820468602.

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., 1119514241041 + 949126041361 = 1058071^2 + 974231^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 517160070599 + ... + 517160070602.

Almost surely, 2^{2068640282402} is an apocalyptic number.

2068640282402 is a deficient number, since it is larger than the sum of its proper divisors (1034320141204).

2068640282402 is a wasteful number, since it uses less digits than its factorization.

2068640282402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1034320141203.

The product of its (nonzero) digits is 589824, while the sum is 44.

The spelling of 2068640282402 in words is "two trillion, sixty-eight billion, six hundred forty million, two hundred eighty-two thousand, four hundred two".