68247686516 has 24 divisors (see below), whose sum is σ = 122735320680. Its totient is φ = 33181564032.

The previous prime is 68247686501. The next prime is 68247686527. The reversal of 68247686516 is 61568674286.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 11700748900 + 56546937616 = 108170^2 + 237796^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108866 + ... + 385158.

It is an arithmetic number, because the mean of its divisors is an integer number (5113971695).

Almost surely, 2^68247686516 is an apocalyptic number.

It is an amenable number.

68247686516 is a deficient number, since it is larger than the sum of its proper divisors (54487634164).

68247686516 is a wasteful number, since it uses less digits than its factorization.

68247686516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278003 (or 278001 counting only the distinct ones).

The product of its digits is 23224320, while the sum is 59.

The spelling of 68247686516 in words is "sixty-eight billion, two hundred forty-seven million, six hundred eighty-six thousand, five hundred sixteen".