67543627264 has 80 divisors (see below), whose sum is σ = 137798836560. Its totient is φ = 33067008000.

The previous prime is 67543627259. The next prime is 67543627273. The reversal of 67543627264 is 46272634576.

67543627264 = 30382² + 30383² + ... + 30454².

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5188764 + ... + 5201764.

It is an arithmetic number, because the mean of its divisors is an integer number (1722485457).

Almost surely, 2^67543627264 is an apocalyptic number.

67543627264 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67543627264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68899418280).

67543627264 is an abundant number, since it is smaller than the sum of its proper divisors (70255209296).

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

67543627264 is a wasteful number, since it uses less digits than its factorization.

67543627264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13231 (or 13215 counting only the distinct ones).

The product of its digits is 10160640, while the sum is 52.

The spelling of 67543627264 in words is "sixty-seven billion, five hundred forty-three million, six hundred twenty-seven thousand, two hundred sixty-four".