68490247122 has 48 divisors (see below), whose sum is σ = 171408755232. Its totient is φ = 19533759360.

The previous prime is 68490247121. The next prime is 68490247123. The reversal of 68490247122 is 22174209486.

It is an interprime number because it is at equal distance from previous prime (68490247121) and next prime (68490247123).

It is not an unprimeable number, because it can be changed into a prime (68490247121) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10170468 + ... + 10177199.

It is an arithmetic number, because the mean of its divisors is an integer number (3571015734).

Almost surely, 2^68490247122 is an apocalyptic number.

68490247122 is an abundant number, since it is smaller than the sum of its proper divisors (102918508110).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68490247122 is a wasteful number, since it uses less digits than its factorization.

68490247122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20347703 (or 20347700 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The spelling of 68490247122 in words is "sixty-eight billion, four hundred ninety million, two hundred forty-seven thousand, one hundred twenty-two".