68141781552 has 240 divisors, whose sum is σ = 196392180096. Its totient is φ = 20337408000.

The previous prime is 68141781503. The next prime is 68141781559. The reversal of 68141781552 is 25518714186.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (68141781559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 70176427 + ... + 70177397.

Almost surely, 2^68141781552 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 68141781552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98196090048).

68141781552 is an abundant number, since it is smaller than the sum of its proper divisors (128250398544).

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

68141781552 is a wasteful number, since it uses less digits than its factorization.

68141781552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1260 (or 1241 counting only the distinct ones).

The product of its digits is 537600, while the sum is 48.

The spelling of 68141781552 in words is "sixty-eight billion, one hundred forty-one million, seven hundred eighty-one thousand, five hundred fifty-two".