67512916064 has 72 divisors (see below), whose sum is σ = 146264494320. Its totient is φ = 30652680960.

The previous prime is 67512916057. The next prime is 67512916109. The reversal of 67512916064 is 46061921576.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3548882 + ... + 3567854.

It is an arithmetic number, because the mean of its divisors is an integer number (2031451310).

Almost surely, 2^67512916064 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 67512916064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73132247160).

67512916064 is an abundant number, since it is smaller than the sum of its proper divisors (78751578256).

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

67512916064 is a wasteful number, since it uses less digits than its factorization.

67512916064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19924 (or 19905 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 47.

The spelling of 67512916064 in words is "sixty-seven billion, five hundred twelve million, nine hundred sixteen thousand, sixty-four".