68813164944 has 120 divisors (see below), whose sum is σ = 204003371520. Its totient is φ = 21578517504.

The previous prime is 68813164943. The next prime is 68813164963. The reversal of 68813164944 is 44946131886.

68813164944 is a `hidden beast` number, since 68 + 81 + 3 + 16 + 494 + 4 = 666.

It is a super-2 number, since 2×68813164944² (a number of 22 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (68813164943) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6768537 + ... + 6778695.

It is an arithmetic number, because the mean of its divisors is an integer number (1700028096).

Almost surely, 2^68813164944 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 68813164944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102001685760).

68813164944 is an abundant number, since it is smaller than the sum of its proper divisors (135190206576).

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

68813164944 is a wasteful number, since it uses less digits than its factorization.

68813164944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12957 (or 12948 counting only the distinct ones).

The product of its digits is 3981312, while the sum is 54.

The spelling of 68813164944 in words is "sixty-eight billion, eight hundred thirteen million, one hundred sixty-four thousand, nine hundred forty-four".