67642542550 has 48 divisors (see below), whose sum is σ = 137380349952. Its totient is φ = 24574442400.

The previous prime is 67642542497. The next prime is 67642542613. The reversal of 67642542550 is 5524524676.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 67642542550.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 541279 + ... + 654421.

It is an arithmetic number, because the mean of its divisors is an integer number (2862090624).

Almost surely, 2^67642542550 is an apocalyptic number.

67642542550 is an abundant number, since it is smaller than the sum of its proper divisors (69737807402).

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

67642542550 is a wasteful number, since it uses less digits than its factorization.

67642542550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114253 (or 114248 counting only the distinct ones).

The product of its (nonzero) digits is 2016000, while the sum is 46.

The spelling of 67642542550 in words is "sixty-seven billion, six hundred forty-two million, five hundred forty-two thousand, five hundred fifty".