67189549972 has 6 divisors (see below), whose sum is σ = 117581712458. Its totient is φ = 33594774984.

The previous prime is 67189549967. The next prime is 67189549979. The reversal of 67189549972 is 27994598176.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 66793301136 + 396248836 = 258444^2 + 19906^2 .

It is a junction number, because it is equal to n+sod(n) for n = 67189549898 and 67189549907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67189549979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8398693743 + ... + 8398693750.

Almost surely, 2^67189549972 is an apocalyptic number.

It is an amenable number.

67189549972 is a deficient number, since it is larger than the sum of its proper divisors (50392162486).

67189549972 is a wasteful number, since it uses less digits than its factorization.

67189549972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16797387497 (or 16797387495 counting only the distinct ones).

The product of its digits is 68584320, while the sum is 67.

The spelling of 67189549972 in words is "sixty-seven billion, one hundred eighty-nine million, five hundred forty-nine thousand, nine hundred seventy-two".