68781195756 has 648 divisors, whose sum is σ = 233395658496. Its totient is φ = 16709172480.

The previous prime is 68781195739. The next prime is 68781195757. The reversal of 68781195756 is 65759118786.

It is a Harshad number since it is a multiple of its sum of digits (63).

Its product of digits (25401600) is a multiple of the sum of its prime divisors (162).

It is a junction number, because it is equal to n+sod(n) for n = 68781195693 and 68781195702.

It is not an unprimeable number, because it can be changed into a prime (68781195757) by changing a digit.

It is a polite number, since it can be written in 215 ways as a sum of consecutive naturals, for example, 968749201 + ... + 968749271.

Almost surely, 2^68781195756 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68781195756, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116697829248).

68781195756 is an abundant number, since it is smaller than the sum of its proper divisors (164614462740).

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

68781195756 is a wasteful number, since it uses less digits than its factorization.

68781195756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203 (or 162 counting only the distinct ones).

The product of its digits is 25401600, while the sum is 63.

The spelling of 68781195756 in words is "sixty-eight billion, seven hundred eighty-one million, one hundred ninety-five thousand, seven hundred fifty-six".