67440688322 has 54 divisors (see below), whose sum is σ = 121114364427. Its totient is φ = 28082321568.

The previous prime is 67440688313. The next prime is 67440688373. The reversal of 67440688322 is 22388604476.

It can be written as a sum of positive squares in 5 ways, for example, as 36661143841 + 30779544481 = 191471^2 + 175441^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=183631.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 95120504 + ... + 95121212.

Almost surely, 2^67440688322 is an apocalyptic number.

67440688322 is a deficient number, since it is larger than the sum of its proper divisors (53673676105).

67440688322 is an frugal number, since it uses more digits than its factorization.

67440688322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1508 (or 755 counting only the distinct ones).

The product of its (nonzero) digits is 3096576, while the sum is 50.

Multiplying 67440688322 by its sum of digits (50), we get a square (3372034416100 = 1836310²).

The spelling of 67440688322 in words is "sixty-seven billion, four hundred forty million, six hundred eighty-eight thousand, three hundred twenty-two".