68238866460 has 24 divisors (see below), whose sum is σ = 191068826256. Its totient is φ = 18197031040.

The previous prime is 68238866459. The next prime is 68238866503. The reversal of 68238866460 is 6466883286.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 68238866460.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 568657161 + ... + 568657280.

It is an arithmetic number, because the mean of its divisors is an integer number (7961201094).

Almost surely, 2^68238866460 is an apocalyptic number.

68238866460 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

68238866460 is an abundant number, since it is smaller than the sum of its proper divisors (122829959796).

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

68238866460 is a wasteful number, since it uses less digits than its factorization.

68238866460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1137314453 (or 1137314451 counting only the distinct ones).

The product of its (nonzero) digits is 15925248, while the sum is 57.

The spelling of 68238866460 in words is "sixty-eight billion, two hundred thirty-eight million, eight hundred sixty-six thousand, four hundred sixty".