67640596488 has 24 divisors (see below), whose sum is σ = 183193282350. Its totient is φ = 22546865472.

The previous prime is 67640596459. The next prime is 67640596501. The reversal of 67640596488 is 88469504676.

67640596488 is a `hidden beast` number, since 6 + 7 + 64 + 0 + 5 + 96 + 488 = 666.

It can be written as a sum of positive squares in only one way, i.e., 44445915684 + 23194680804 = 210822^2 + 152298^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 469726293 + ... + 469726436.

Almost surely, 2^67640596488 is an apocalyptic number.

It is an amenable number.

67640596488 is an abundant number, since it is smaller than the sum of its proper divisors (115552685862).

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

67640596488 is a wasteful number, since it uses less digits than its factorization.

67640596488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 939452741 (or 939452734 counting only the distinct ones).

The product of its (nonzero) digits is 69672960, while the sum is 63.

It can be divided in two parts, 67640 and 596488, that added together give a triangular number (664128 = T₁₁₅₂).

The spelling of 67640596488 in words is "sixty-seven billion, six hundred forty million, five hundred ninety-six thousand, four hundred eighty-eight".