68721461682 has 32 divisors (see below), whose sum is σ = 137666351040. Its totient is φ = 22869950400.

The previous prime is 68721461663. The next prime is 68721461687. The reversal of 68721461682 is 28616412786.

It is not an unprimeable number, because it can be changed into a prime (68721461687) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12051432 + ... + 12057132.

It is an arithmetic number, because the mean of its divisors is an integer number (4302073470).

Almost surely, 2^68721461682 is an apocalyptic number.

68721461682 is an abundant number, since it is smaller than the sum of its proper divisors (68944889358).

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

68721461682 is a wasteful number, since it uses less digits than its factorization.

68721461682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8618.

The product of its digits is 1548288, while the sum is 51.

The spelling of 68721461682 in words is "sixty-eight billion, seven hundred twenty-one million, four hundred sixty-one thousand, six hundred eighty-two".