67321153642 has 4 divisors (see below), whose sum is σ = 100981730466. Its totient is φ = 33660576820.

The previous prime is 67321153619. The next prime is 67321153657. The reversal of 67321153642 is 24635112376.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 50494134681 + 16827018961 = 224709^2 + 129719^2 .

It is a junction number, because it is equal to n+sod(n) for n = 67321153595 and 67321153604.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 16830288409 + ... + 16830288412.

Almost surely, 2^67321153642 is an apocalyptic number.

67321153642 is a deficient number, since it is larger than the sum of its proper divisors (33660576824).

67321153642 is a wasteful number, since it uses less digits than its factorization.

67321153642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33660576823.

The product of its digits is 181440, while the sum is 40.

The spelling of 67321153642 in words is "sixty-seven billion, three hundred twenty-one million, one hundred fifty-three thousand, six hundred forty-two".