67990417704440 has 256 divisors, whose sum is σ = 196916686848000. Its totient is φ = 20512145203200.

The previous prime is 67990417704439. The next prime is 67990417704479. The reversal of 67990417704440 is 4440771409976.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 13917836 + ... + 18157284.

It is an arithmetic number, because the mean of its divisors is an integer number (769205808000).

Almost surely, 2^{67990417704440} 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 67990417704440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98458343424000).

67990417704440 is an abundant number, since it is smaller than the sum of its proper divisors (128926269143560).

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

67990417704440 is a wasteful number, since it uses less digits than its factorization.

67990417704440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4239646 (or 4239642 counting only the distinct ones).

The product of its (nonzero) digits is 42674688, while the sum is 62.

The spelling of 67990417704440 in words is "sixty-seven trillion, nine hundred ninety billion, four hundred seventeen million, seven hundred four thousand, four hundred forty".