68743513768 has 64 divisors (see below), whose sum is σ = 148612968000. Its totient is φ = 29590428672.

The previous prime is 68743513763. The next prime is 68743513777. The reversal of 68743513768 is 86731534786.

It is a Harshad number since it is a multiple of its sum of digits (58).

It is not an unprimeable number, because it can be changed into a prime (68743513763) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 383746 + ... + 533617.

It is an arithmetic number, because the mean of its divisors is an integer number (2322077625).

Almost surely, 2^68743513768 is an apocalyptic number.

68743513768 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

68743513768 is an abundant number, since it is smaller than the sum of its proper divisors (79869454232).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68743513768 is a wasteful number, since it uses less digits than its factorization.

68743513768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 917434 (or 917430 counting only the distinct ones).

The product of its digits is 20321280, while the sum is 58.

The spelling of 68743513768 in words is "sixty-eight billion, seven hundred forty-three million, five hundred thirteen thousand, seven hundred sixty-eight".