68152161312 has 144 divisors (see below), whose sum is σ = 205154389440. Its totient is φ = 21423822336.

The previous prime is 68152161263. The next prime is 68152161331. The reversal of 68152161312 is 21316125186.

68152161312 is a `hidden beast` number, since 6 + 8 + 1 + 5 + 21 + 613 + 12 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-2 number, since 2×68152161312² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 264253 + ... + 454019.

It is an arithmetic number, because the mean of its divisors is an integer number (1424683260).

Almost surely, 2^68152161312 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 68152161312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102577194720).

68152161312 is an abundant number, since it is smaller than the sum of its proper divisors (137002228128).

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

68152161312 is a wasteful number, since it uses less digits than its factorization.

68152161312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189855 (or 189844 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

Adding to 68152161312 its reverse (21316125186), we get a palindrome (89468286498).

The spelling of 68152161312 in words is "sixty-eight billion, one hundred fifty-two million, one hundred sixty-one thousand, three hundred twelve".