68456012882 has 4 divisors (see below), whose sum is σ = 102684019326. Its totient is φ = 34228006440.

The previous prime is 68456012861. The next prime is 68456012887. The reversal of 68456012882 is 28821065486.

It is a Cunningham number, because it is equal to 261641²+1.

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., 68456012881 + 1 = 261641^2 + 1^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 68456012882.

It is not an unprimeable number, because it can be changed into a prime (68456012887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17114003219 + ... + 17114003222.

Almost surely, 2^68456012882 is an apocalyptic number.

68456012882 is a deficient number, since it is larger than the sum of its proper divisors (34228006444).

68456012882 is a wasteful number, since it uses less digits than its factorization.

68456012882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34228006443.

The product of its (nonzero) digits is 1474560, while the sum is 50.

The spelling of 68456012882 in words is "sixty-eight billion, four hundred fifty-six million, twelve thousand, eight hundred eighty-two".