67542029428 has 12 divisors (see below), whose sum is σ = 118391375620. Its totient is φ = 33715922112.

The previous prime is 67542029393. The next prime is 67542029431. The reversal of 67542029428 is 82492024576.

It can be written as a sum of positive squares in 2 ways, for example, as 832437904 + 66709591524 = 28852^2 + 258282^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13770393 + ... + 13775296.

Almost surely, 2^67542029428 is an apocalyptic number.

It is an amenable number.

67542029428 is a deficient number, since it is larger than the sum of its proper divisors (50849346192).

67542029428 is a wasteful number, since it uses less digits than its factorization.

67542029428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27546306 (or 27546304 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 49.

The spelling of 67542029428 in words is "sixty-seven billion, five hundred forty-two million, twenty-nine thousand, four hundred twenty-eight".