681750061039 has 12 divisors (see below), whose sum is σ = 726073849800. Its totient is φ = 639997532288.

The previous prime is 681750061037. The next prime is 681750061051. The reversal of 681750061039 is 930160057186.

It is a happy number.

It is not a de Polignac number, because 681750061039 - 2¹ = 681750061037 is a prime.

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 681750061039.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (681750061033) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2919709 + ... + 3144550.

It is an arithmetic number, because the mean of its divisors is an integer number (60506154150).

Almost surely, 2^681750061039 is an apocalyptic number.

681750061039 is a deficient number, since it is larger than the sum of its proper divisors (44323788761).

681750061039 is a wasteful number, since it uses less digits than its factorization.

681750061039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6064682 (or 6064665 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 46.

The spelling of 681750061039 in words is "six hundred eighty-one billion, seven hundred fifty million, sixty-one thousand, thirty-nine".