67091631312 has 80 divisors (see below), whose sum is σ = 179687249280. Its totient is φ = 21545664000.

The previous prime is 67091631311. The next prime is 67091631359. The reversal of 67091631312 is 21313619076.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67091631311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 589437 + ... + 693987.

It is an arithmetic number, because the mean of its divisors is an integer number (2246090616).

Almost surely, 2^67091631312 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 67091631312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89843624640).

67091631312 is an abundant number, since it is smaller than the sum of its proper divisors (112595617968).

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

67091631312 is a wasteful number, since it uses less digits than its factorization.

67091631312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105052 (or 105046 counting only the distinct ones).

The product of its (nonzero) digits is 40824, while the sum is 39.

The spelling of 67091631312 in words is "sixty-seven billion, ninety-one million, six hundred thirty-one thousand, three hundred twelve".