68707055507 has 4 divisors (see below), whose sum is σ = 68880121536. Its totient is φ = 68533989480.

The previous prime is 68707055479. The next prime is 68707055513. The reversal of 68707055507 is 70555070786.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 68707055507 - 2¹⁴ = 68707039123 is a prime.

It is a super-5 number, since 5×68707055507⁵ (a number of 55 digits) contains 55555 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68707055537) 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, 86532419 + ... + 86533212.

It is an arithmetic number, because the mean of its divisors is an integer number (17220030384).

Almost surely, 2^68707055507 is an apocalyptic number.

68707055507 is a deficient number, since it is larger than the sum of its proper divisors (173066029).

68707055507 is a wasteful number, since it uses less digits than its factorization.

68707055507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173066028.

The product of its (nonzero) digits is 2058000, while the sum is 50.

The spelling of 68707055507 in words is "sixty-eight billion, seven hundred seven million, fifty-five thousand, five hundred seven".