67813134872 has 24 divisors (see below), whose sum is σ = 147908751660. Its totient is φ = 29062771920.

The previous prime is 67813134871. The next prime is 67813134919. The reversal of 67813134872 is 27843131876.

It is a happy number.

It is a super-2 number, since 2×67813134872² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 67813134872.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67813134871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 86495954 + ... + 86496737.

Almost surely, 2^67813134872 is an apocalyptic number.

It is an amenable number.

67813134872 is an abundant number, since it is smaller than the sum of its proper divisors (80095616788).

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

67813134872 is a wasteful number, since it uses less digits than its factorization.

67813134872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172992711 (or 172992700 counting only the distinct ones).

The product of its digits is 1354752, while the sum is 50.

The spelling of 67813134872 in words is "sixty-seven billion, eight hundred thirteen million, one hundred thirty-four thousand, eight hundred seventy-two".