68311283517 has 12 divisors (see below), whose sum is σ = 98767572384. Its totient is φ = 45496677960.

The previous prime is 68311283389. The next prime is 68311283531. The reversal of 68311283517 is 71538211386.

It is a happy number.

68311283517 is a `hidden beast` number, since 6 + 8 + 3 + 1 + 128 + 3 + 517 = 666.

It is not a de Polignac number, because 68311283517 - 2⁷ = 68311283389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68311283567) 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, 3671683 + ... + 3690240.

It is an arithmetic number, because the mean of its divisors is an integer number (8230631032).

Almost surely, 2^68311283517 is an apocalyptic number.

It is an amenable number.

68311283517 is a deficient number, since it is larger than the sum of its proper divisors (30456288867).

68311283517 is a wasteful number, since it uses less digits than its factorization.

68311283517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7362960 (or 7362957 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The spelling of 68311283517 in words is "sixty-eight billion, three hundred eleven million, two hundred eighty-three thousand, five hundred seventeen".