67680545525 has 96 divisors (see below), whose sum is σ = 93148323840. Its totient is φ = 48599066880.

The previous prime is 67680545509. The next prime is 67680545579. The reversal of 67680545525 is 52554508676.

It is not a de Polignac number, because 67680545525 - 2⁴ = 67680545509 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a Curzon number.

It is a congruent 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 95 ways as a sum of consecutive naturals, for example, 111499772 + ... + 111500378.

It is an arithmetic number, because the mean of its divisors is an integer number (970295040).

Almost surely, 2^67680545525 is an apocalyptic number.

It is an amenable number.

67680545525 is a deficient number, since it is larger than the sum of its proper divisors (25467778315).

67680545525 is a wasteful number, since it uses less digits than its factorization.

67680545525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 835 (or 830 counting only the distinct ones).

The product of its (nonzero) digits is 10080000, while the sum is 53.

The spelling of 67680545525 in words is "sixty-seven billion, six hundred eighty million, five hundred forty-five thousand, five hundred twenty-five".