67561425984 has 112 divisors (see below), whose sum is σ = 192582149760. Its totient is φ = 20779991040.

The previous prime is 67561425983. The next prime is 67561425989. The reversal of 67561425984 is 48952416576.

It is a super-5 number, since 5×67561425984⁵ (a number of 55 digits) contains 55555 as substring.

It is not an unprimeable number, because it can be changed into a prime (67561425983) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 10702189 + ... + 10708499.

It is an arithmetic number, because the mean of its divisors is an integer number (1719483480).

Almost surely, 2^67561425984 is an apocalyptic number.

67561425984 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 67561425984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96291074880).

67561425984 is an abundant number, since it is smaller than the sum of its proper divisors (125020723776).

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

67561425984 is a wasteful number, since it uses less digits than its factorization.

67561425984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10628 (or 10618 counting only the distinct ones).

The product of its digits is 14515200, while the sum is 57.

The spelling of 67561425984 in words is "sixty-seven billion, five hundred sixty-one million, four hundred twenty-five thousand, nine hundred eighty-four".