67051214550 has 72 divisors (see below), whose sum is σ = 180311304576. Its totient is φ = 17863744320.

The previous prime is 67051214533. The next prime is 67051214561. The reversal of 67051214550 is 5541215076.

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 35 ways as a sum of consecutive naturals, for example, 420612 + ... + 557688.

Almost surely, 2^67051214550 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67051214550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90155652288).

67051214550 is an abundant number, since it is smaller than the sum of its proper divisors (113260090026).

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

67051214550 is a wasteful number, since it uses less digits than its factorization.

67051214550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138182 (or 138174 counting only the distinct ones).

The product of its (nonzero) digits is 42000, while the sum is 36.

The spelling of 67051214550 in words is "sixty-seven billion, fifty-one million, two hundred fourteen thousand, five hundred fifty".