68495681573 has 12 divisors (see below), whose sum is σ = 75297857964. Its totient is φ = 62261179200.

The previous prime is 68495681533. The next prime is 68495681593. The reversal of 68495681573 is 37518659486.

68495681573 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 59322447844 + 9173233729 = 243562^2 + 95777^2 .

It is not a de Polignac number, because 68495681573 - 2⁶ = 68495681509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68495681533) 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, 1114865 + ... + 1174697.

It is an arithmetic number, because the mean of its divisors is an integer number (6274821497).

Almost surely, 2^68495681573 is an apocalyptic number.

It is an amenable number.

68495681573 is a deficient number, since it is larger than the sum of its proper divisors (6802176391).

68495681573 is a wasteful number, since it uses less digits than its factorization.

68495681573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69316 (or 69305 counting only the distinct ones).

The product of its digits is 43545600, while the sum is 62.

The spelling of 68495681573 in words is "sixty-eight billion, four hundred ninety-five million, six hundred eighty-one thousand, five hundred seventy-three".