67139280384 has 320 divisors, whose sum is σ = 210444030720. Its totient is φ = 18800640000.

The previous prime is 67139280331. The next prime is 67139280391. The reversal of 67139280384 is 48308293176.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13159434 + ... + 13164534.

It is an arithmetic number, because the mean of its divisors is an integer number (657637596).

Almost surely, 2^67139280384 is an apocalyptic number.

67139280384 is a gapful number since it is divisible by the number (64) 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 67139280384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105222015360).

67139280384 is an abundant number, since it is smaller than the sum of its proper divisors (143304750336).

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

67139280384 is a wasteful number, since it uses less digits than its factorization.

67139280384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5193 (or 5177 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 51.

The spelling of 67139280384 in words is "sixty-seven billion, one hundred thirty-nine million, two hundred eighty thousand, three hundred eighty-four".