67648532580 has 72 divisors (see below), whose sum is σ = 212276446200. Its totient is φ = 17417551872.

The previous prime is 67648532579. The next prime is 67648532593. The reversal of 67648532580 is 8523584676.

67648532580 is a `hidden beast` number, since 6 + 7 + 6 + 4 + 8 + 53 + 2 + 580 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 9864065124 + 57784467456 = 99318^2 + 240384^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6474525 + ... + 6484964.

It is an arithmetic number, because the mean of its divisors is an integer number (2948283975).

Almost surely, 2^67648532580 is an apocalyptic number.

67648532580 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

67648532580 is an abundant number, since it is smaller than the sum of its proper divisors (144627913620).

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

67648532580 is a wasteful number, since it uses less digits than its factorization.

67648532580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12959533 (or 12959528 counting only the distinct ones).

The product of its (nonzero) digits is 9676800, while the sum is 54.

The spelling of 67648532580 in words is "sixty-seven billion, six hundred forty-eight million, five hundred thirty-two thousand, five hundred eighty".