68907633071 has 4 divisors (see below), whose sum is σ = 68916010992. Its totient is φ = 68899255152.

The previous prime is 68907633061. The next prime is 68907633073. The reversal of 68907633071 is 17033670986.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17033670986 = 2 ⋅8516835493.

It is a cyclic number.

It is not a de Polignac number, because 68907633071 - 2²² = 68903438767 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68907633073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4176611 + ... + 4193076.

It is an arithmetic number, because the mean of its divisors is an integer number (17229002748).

Almost surely, 2^68907633071 is an apocalyptic number.

68907633071 is a deficient number, since it is larger than the sum of its proper divisors (8377921).

68907633071 is an equidigital number, since it uses as much as digits as its factorization.

68907633071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8377920.

The product of its (nonzero) digits is 1143072, while the sum is 50.

The spelling of 68907633071 in words is "sixty-eight billion, nine hundred seven million, six hundred thirty-three thousand, seventy-one".