67257449430 has 64 divisors (see below), whose sum is σ = 164447781120. Its totient is φ = 17599753856.

The previous prime is 67257449429. The next prime is 67257449521. The reversal of 67257449430 is 3494475276.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 962764 + ... + 1030256.

It is an arithmetic number, because the mean of its divisors is an integer number (2569496580).

Almost surely, 2^67257449430 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67257449430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82223890560).

67257449430 is an abundant number, since it is smaller than the sum of its proper divisors (97190331690).

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

67257449430 is a wasteful number, since it uses less digits than its factorization.

67257449430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68125.

The product of its (nonzero) digits is 5080320, while the sum is 51.

The spelling of 67257449430 in words is "sixty-seven billion, two hundred fifty-seven million, four hundred forty-nine thousand, four hundred thirty".