68561265250 has 16 divisors (see below), whose sum is σ = 128346689016. Its totient is φ = 27424506000.

The previous prime is 68561265239. The next prime is 68561265257. The reversal of 68561265250 is 5256216586.

It can be written as a sum of positive squares in 4 ways, for example, as 16600518649 + 51960746601 = 128843^2 + 227949^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 68561265250.

It is not an unprimeable number, because it can be changed into a prime (68561265257) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 137122281 + ... + 137122780.

Almost surely, 2^68561265250 is an apocalyptic number.

68561265250 is a deficient number, since it is larger than the sum of its proper divisors (59785423766).

68561265250 is a wasteful number, since it uses less digits than its factorization.

68561265250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274245078 (or 274245068 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 46.

The spelling of 68561265250 in words is "sixty-eight billion, five hundred sixty-one million, two hundred sixty-five thousand, two hundred fifty".