667367864064 has 108 divisors (see below), whose sum is σ = 2099112163512. Its totient is φ = 202232678400.

The previous prime is 667367864041. The next prime is 667367864083. The reversal of 667367864064 is 460468763766.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 667367863992 and 667367864010.

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, 13140847 + ... + 13191534.

Almost surely, 2^667367864064 is an apocalyptic number.

667367864064 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

667367864064 is an abundant number, since it is smaller than the sum of its proper divisors (1431744299448).

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

667367864064 is a wasteful number, since it uses less digits than its factorization.

667367864064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26332414 (or 26332397 counting only the distinct ones).

The product of its (nonzero) digits is 146313216, while the sum is 63.

The spelling of 667367864064 in words is "six hundred sixty-seven billion, three hundred sixty-seven million, eight hundred sixty-four thousand, sixty-four".