67434302821 has 8 divisors (see below), whose sum is σ = 69616711424. Its totient is φ = 65252338560.

The previous prime is 67434302801. The next prime is 67434302839. The reversal of 67434302821 is 12820343476.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-67434302821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67434302801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 212341 + ... + 424213.

It is an arithmetic number, because the mean of its divisors is an integer number (8702088928).

Almost surely, 2^67434302821 is an apocalyptic number.

It is an amenable number.

67434302821 is a deficient number, since it is larger than the sum of its proper divisors (2182408603).

67434302821 is a wasteful number, since it uses less digits than its factorization.

67434302821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222171.

The product of its (nonzero) digits is 193536, while the sum is 40.

The spelling of 67434302821 in words is "sixty-seven billion, four hundred thirty-four million, three hundred two thousand, eight hundred twenty-one".