68189297932 has 96 divisors (see below), whose sum is σ = 147141033984. Its totient is φ = 27007041600.

The previous prime is 68189297903. The next prime is 68189297951. The reversal of 68189297932 is 23979298186.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 13792653 + ... + 13797595.

It is an arithmetic number, because the mean of its divisors is an integer number (1532719104).

Almost surely, 2^68189297932 is an apocalyptic number.

68189297932 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68189297932, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73570516992).

68189297932 is an abundant number, since it is smaller than the sum of its proper divisors (78951736052).

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

68189297932 is a wasteful number, since it uses less digits than its factorization.

68189297932 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5699 (or 5697 counting only the distinct ones).

The product of its digits is 23514624, while the sum is 64.

The spelling of 68189297932 in words is "sixty-eight billion, one hundred eighty-nine million, two hundred ninety-seven thousand, nine hundred thirty-two".