80668140140 has 48 divisors (see below), whose sum is σ = 197256451392. Its totient is φ = 27135803136.

The previous prime is 80668140127. The next prime is 80668140169. The reversal of 80668140140 is 4104186608.

It is a junction number, because it is equal to n+sod(n) for n = 80668140094 and 80668140103.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5428439 + ... + 5443278.

It is an arithmetic number, because the mean of its divisors is an integer number (4109509404).

Almost surely, 2^80668140140 is an apocalyptic number.

It is an amenable number.

80668140140 is an abundant number, since it is smaller than the sum of its proper divisors (116588311252).

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

80668140140 is a wasteful number, since it uses less digits than its factorization.

80668140140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10871786 (or 10871784 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 38.

The spelling of 80668140140 in words is "eighty billion, six hundred sixty-eight million, one hundred forty thousand, one hundred forty".