67055681440 has 48 divisors (see below), whose sum is σ = 172820783520. Its totient is φ = 24383883520.

The previous prime is 67055681419. The next prime is 67055681471. The reversal of 67055681440 is 4418655076.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19048150 + ... + 19051669.

It is an arithmetic number, because the mean of its divisors is an integer number (3600432990).

Almost surely, 2^67055681440 is an apocalyptic number.

It is an amenable number.

67055681440 is an abundant number, since it is smaller than the sum of its proper divisors (105765102080).

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

67055681440 is a wasteful number, since it uses less digits than its factorization.

67055681440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38099845 (or 38099837 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 46.

The spelling of 67055681440 in words is "sixty-seven billion, fifty-five million, six hundred eighty-one thousand, four hundred forty".