68740787041 has 4 divisors (see below), whose sum is σ = 69682441732. Its totient is φ = 67799132352.

The previous prime is 68740787023. The next prime is 68740787047. The reversal of 68740787041 is 14078704786.

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

It can be written as a sum of positive squares in 2 ways, for example, as 34047999441 + 34692787600 = 184521^2 + 186260^2 .

It is a cyclic number.

It is not a de Polignac number, because 68740787041 - 2⁷ = 68740786913 is a prime.

It is a super-2 number, since 2×68740787041² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68740787041.

It is not an unprimeable number, because it can be changed into a prime (68740787047) 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, 470827236 + ... + 470827381.

It is an arithmetic number, because the mean of its divisors is an integer number (17420610433).

Almost surely, 2^68740787041 is an apocalyptic number.

It is an amenable number.

68740787041 is a deficient number, since it is larger than the sum of its proper divisors (941654691).

68740787041 is an equidigital number, since it uses as much as digits as its factorization.

68740787041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 941654690.

The product of its (nonzero) digits is 2107392, while the sum is 52.

The spelling of 68740787041 in words is "sixty-eight billion, seven hundred forty million, seven hundred eighty-seven thousand, forty-one".