68625758261 has 8 divisors (see below), whose sum is σ = 69132364824. Its totient is φ = 68120709120.

The previous prime is 68625758239. The next prime is 68625758269. The reversal of 68625758261 is 16285752686.

It can be written as a sum of positive squares in 4 ways, for example, as 9023860036 + 59601898225 = 94994^2 + 244135^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68625758261 - 2¹⁸ = 68625496117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68625758197 and 68625758206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68625758269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 300830 + ... + 477231.

It is an arithmetic number, because the mean of its divisors is an integer number (8641545603).

Almost surely, 2^68625758261 is an apocalyptic number.

It is an amenable number.

68625758261 is a deficient number, since it is larger than the sum of its proper divisors (506606563).

68625758261 is a wasteful number, since it uses less digits than its factorization.

68625758261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 778711.

The product of its digits is 9676800, while the sum is 56.

The spelling of 68625758261 in words is "sixty-eight billion, six hundred twenty-five million, seven hundred fifty-eight thousand, two hundred sixty-one".