67136638422 has 24 divisors (see below), whose sum is σ = 156195445176. Its totient is φ = 19181896608.

The previous prime is 67136638381. The next prime is 67136638423. The reversal of 67136638422 is 22483663176.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67136638423) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 114177663 + ... + 114178250.

It is an arithmetic number, because the mean of its divisors is an integer number (6508143549).

Almost surely, 2^67136638422 is an apocalyptic number.

67136638422 is an abundant number, since it is smaller than the sum of its proper divisors (89058806754).

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

67136638422 is a wasteful number, since it uses less digits than its factorization.

67136638422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228355932 (or 228355925 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 48.

The spelling of 67136638422 in words is "sixty-seven billion, one hundred thirty-six million, six hundred thirty-eight thousand, four hundred twenty-two".