67661225522 has 54 divisors (see below), whose sum is σ = 116778969279. Its totient is φ = 29377459320.

The previous prime is 67661225501. The next prime is 67661225537. The reversal of 67661225522 is 22552216676.

It can be written as a sum of positive squares in only one way, i.e., 33830612761 + 33830612761 = 183931^2 + 183931^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=183931.

It is a Duffinian number.

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 26 ways as a sum of consecutive naturals, for example, 93068723 + ... + 93069449.

Almost surely, 2^67661225522 is an apocalyptic number.

67661225522 is a deficient number, since it is larger than the sum of its proper divisors (49117743757).

67661225522 is an equidigital number, since it uses as much as digits as its factorization.

67661225522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1524 (or 763 counting only the distinct ones).

The product of its digits is 604800, while the sum is 44.

The spelling of 67661225522 in words is "sixty-seven billion, six hundred sixty-one million, two hundred twenty-five thousand, five hundred twenty-two".