67531320036 has 18 divisors (see below), whose sum is σ = 170704170182. Its totient is φ = 22510440000.

The previous prime is 67531320011. The next prime is 67531320067. The reversal of 67531320036 is 63002313576.

67531320036 is a `hidden beast` number, since 67 + 531 + 32 + 0 + 0 + 36 = 666.

It can be written as a sum of positive squares in only one way, i.e., 53416454400 + 14114865636 = 231120^2 + 118806^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 1875870001 = 67531320036 / (6 + 7 + 5 + 3 + 1 + 3 + 2 + 0 + 0 + 3 + 6).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 937934965 + ... + 937935036.

Almost surely, 2^67531320036 is an apocalyptic number.

It is an amenable number.

67531320036 is an abundant number, since it is smaller than the sum of its proper divisors (103172850146).

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

67531320036 is a wasteful number, since it uses less digits than its factorization.

67531320036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1875870011 (or 1875870006 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 36.

The spelling of 67531320036 in words is "sixty-seven billion, five hundred thirty-one million, three hundred twenty thousand, thirty-six".