67352364640 has 144 divisors (see below), whose sum is σ = 181463251536. Its totient is φ = 23426585600.

The previous prime is 67352364601. The next prime is 67352364683. The reversal of 67352364640 is 4646325376.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 894870 + ... + 967210.

It is an arithmetic number, because the mean of its divisors is an integer number (1260161469).

Almost surely, 2^67352364640 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67352364640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90731625768).

67352364640 is an abundant number, since it is smaller than the sum of its proper divisors (114110886896).

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

67352364640 is a wasteful number, since it uses less digits than its factorization.

67352364640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72413 (or 72382 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 46.

The spelling of 67352364640 in words is "sixty-seven billion, three hundred fifty-two million, three hundred sixty-four thousand, six hundred forty".