67264143725440 has 32 divisors (see below), whose sum is σ = 160803343595160. Its totient is φ = 26905657489920.

The previous prime is 67264143725437. The next prime is 67264143725543. The reversal of 67264143725440 is 4452734146276.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×67264143725440² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52550111646 + ... + 52550112925.

Almost surely, 2^{67264143725440} is an apocalyptic number.

It is an amenable number.

67264143725440 is an abundant number, since it is smaller than the sum of its proper divisors (93539199869720).

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

67264143725440 is a wasteful number, since it uses less digits than its factorization.

67264143725440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105100224590 (or 105100224578 counting only the distinct ones).

The product of its (nonzero) digits is 27095040, while the sum is 55.

The spelling of 67264143725440 in words is "sixty-seven trillion, two hundred sixty-four billion, one hundred forty-three million, seven hundred twenty-five thousand, four hundred forty".