67995896640 has 336 divisors, whose sum is σ = 251762922432. Its totient is φ = 15503007744.

The previous prime is 67995896621. The next prime is 67995896663. The reversal of 67995896640 is 4669859976.

It is a tau number, because it is divible by the number of its divisors (336).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 21495699 + ... + 21498861.

It is an arithmetic number, because the mean of its divisors is an integer number (749294412).

Almost surely, 2^67995896640 is an apocalyptic number.

67995896640 is a gapful number since it is divisible by the number (60) 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 67995896640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125881461216).

67995896640 is an abundant number, since it is smaller than the sum of its proper divisors (183767025792).

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

67995896640 is a wasteful number, since it uses less digits than its factorization.

67995896640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3654 (or 3637 counting only the distinct ones).

The product of its (nonzero) digits is 176359680, while the sum is 69.

The spelling of 67995896640 in words is "sixty-seven billion, nine hundred ninety-five million, eight hundred ninety-six thousand, six hundred forty".