68431104775 has 24 divisors (see below), whose sum is σ = 96593353344. Its totient is φ = 47604242400.

The previous prime is 68431104773. The next prime is 68431104793. The reversal of 68431104775 is 57740113486.

It is not a de Polignac number, because 68431104775 - 2¹ = 68431104773 is a prime.

It is a super-2 number, since 2×68431104775² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68431104773) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5403249 + ... + 5415898.

It is an arithmetic number, because the mean of its divisors is an integer number (4024723056).

Almost surely, 2^68431104775 is an apocalyptic number.

68431104775 is a deficient number, since it is larger than the sum of its proper divisors (28162248569).

68431104775 is a wasteful number, since it uses less digits than its factorization.

68431104775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10819191 (or 10819186 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 46.

The spelling of 68431104775 in words is "sixty-eight billion, four hundred thirty-one million, one hundred four thousand, seven hundred seventy-five".