67665120000 has 360 divisors, whose sum is σ = 232845653040. Its totient is φ = 17418240000.

The previous prime is 67665119987. The next prime is 67665120031. The reversal of 67665120000 is 2156676.

It is a super-2 number, since 2×67665120000² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 13917570 + ... + 13922430.

Almost surely, 2^67665120000 is an apocalyptic number.

67665120000 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 67665120000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116422826520).

67665120000 is an abundant number, since it is smaller than the sum of its proper divisors (165180533040).

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

67665120000 is an equidigital number, since it uses as much as digits as its factorization.

67665120000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4929 (or 4900 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 33.

Adding to 67665120000 its reverse (2156676), we get a palindrome (67667276676).

The spelling of 67665120000 in words is "sixty-seven billion, six hundred sixty-five million, one hundred twenty thousand".