67549920507 has 12 divisors (see below), whose sum is σ = 97720176840. Its totient is φ = 44964940608.

The previous prime is 67549920443. The next prime is 67549920511. The reversal of 67549920507 is 70502994576.

67549920507 is a `hidden beast` number, since 6 + 7 + 5 + 49 + 92 + 0 + 507 = 666.

It is not a de Polignac number, because 67549920507 - 2⁶ = 67549920443 is a prime.

It is not an unprimeable number, because it can be changed into a prime (67549920527) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5688718 + ... + 5700579.

It is an arithmetic number, because the mean of its divisors is an integer number (8143348070).

Almost surely, 2^67549920507 is an apocalyptic number.

67549920507 is a deficient number, since it is larger than the sum of its proper divisors (30170256333).

67549920507 is a wasteful number, since it uses less digits than its factorization.

67549920507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11389962 (or 11389959 counting only the distinct ones).

The product of its (nonzero) digits is 4762800, while the sum is 54.

The spelling of 67549920507 in words is "sixty-seven billion, five hundred forty-nine million, nine hundred twenty thousand, five hundred seven".