68245815122 has 8 divisors (see below), whose sum is σ = 102396333900. Its totient is φ = 34113703824.

The previous prime is 68245815107. The next prime is 68245815137. The reversal of 68245815122 is 22151854286.

It is a Cunningham number, because it is equal to 261239²+1.

It is an interprime number because it is at equal distance from previous prime (68245815107) and next prime (68245815137).

It can be written as a sum of positive squares in 2 ways, for example, as 68245815121 + 1 = 261239^2 + 1^2 .

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

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, 4592597 + ... + 4607432.

Almost surely, 2^68245815122 is an apocalyptic number.

68245815122 is a deficient number, since it is larger than the sum of its proper divisors (34150518778).

68245815122 is a wasteful number, since it uses less digits than its factorization.

68245815122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9203740.

The product of its digits is 307200, while the sum is 44.

The spelling of 68245815122 in words is "sixty-eight billion, two hundred forty-five million, eight hundred fifteen thousand, one hundred twenty-two".