68406355104 has 48 divisors (see below), whose sum is σ = 179614495872. Its totient is φ = 22796046848.

The previous prime is 68406355103. The next prime is 68406355109. The reversal of 68406355104 is 40155360486.

68406355104 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×68406355104² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (68406355103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 275017 + ... + 460919.

It is an arithmetic number, because the mean of its divisors is an integer number (3741968664).

Almost surely, 2^68406355104 is an apocalyptic number.

It is an amenable number.

68406355104 is an abundant number, since it is smaller than the sum of its proper divisors (111208140768).

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

68406355104 is a wasteful number, since it uses less digits than its factorization.

68406355104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189749 (or 189741 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 42.

The spelling of 68406355104 in words is "sixty-eight billion, four hundred six million, three hundred fifty-five thousand, one hundred four".