67641576360432 has 160 divisors (see below), whose sum is σ = 188936127099648. Its totient is φ = 20773487874048.

The previous prime is 67641576360377. The next prime is 67641576360433. The reversal of 67641576360432 is 23406367514676.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67641576360433) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17393583 + ... + 20924145.

Almost surely, 2^{67641576360432} 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 67641576360432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94468063549824).

67641576360432 is an abundant number, since it is smaller than the sum of its proper divisors (121294550739216).

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

67641576360432 is a wasteful number, since it uses less digits than its factorization.

67641576360432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3531087 (or 3531081 counting only the distinct ones).

The product of its (nonzero) digits is 91445760, while the sum is 60.

The spelling of 67641576360432 in words is "sixty-seven trillion, six hundred forty-one billion, five hundred seventy-six million, three hundred sixty thousand, four hundred thirty-two".