68452841640 has 32 divisors (see below), whose sum is σ = 205358525280. Its totient is φ = 18254091072.

The previous prime is 68452841629. The next prime is 68452841651. The reversal of 68452841640 is 4614825486.

It is an interprime number because it is at equal distance from previous prime (68452841629) and next prime (68452841651).

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 68452841640.

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 in 7 ways as a sum of consecutive naturals, for example, 285220054 + ... + 285220293.

It is an arithmetic number, because the mean of its divisors is an integer number (6417453915).

Almost surely, 2^68452841640 is an apocalyptic number.

68452841640 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

68452841640 is an abundant number, since it is smaller than the sum of its proper divisors (136905683640).

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

68452841640 is a wasteful number, since it uses less digits than its factorization.

68452841640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 570440361 (or 570440357 counting only the distinct ones).

The product of its (nonzero) digits is 1474560, while the sum is 48.

The spelling of 68452841640 in words is "sixty-eight billion, four hundred fifty-two million, eight hundred forty-one thousand, six hundred forty".