68388572080 has 20 divisors (see below), whose sum is σ = 159003430272. Its totient is φ = 27355428800.

The previous prime is 68388572059. The next prime is 68388572081. The reversal of 68388572080 is 8027588386.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×68388572080² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (68388572081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 427428496 + ... + 427428655.

Almost surely, 2^68388572080 is an apocalyptic number.

It is an amenable number.

68388572080 is an abundant number, since it is smaller than the sum of its proper divisors (90614858192).

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

68388572080 is a wasteful number, since it uses less digits than its factorization.

68388572080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 854857164 (or 854857158 counting only the distinct ones).

The product of its (nonzero) digits is 5160960, while the sum is 55.

The spelling of 68388572080 in words is "sixty-eight billion, three hundred eighty-eight million, five hundred seventy-two thousand, eighty".