73634020421 has 8 divisors (see below), whose sum is σ = 83471764320. Its totient is φ = 64392503472.

The previous prime is 73634020417. The next prime is 73634020433. The reversal of 73634020421 is 12402043637.

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

It is a cyclic number.

It is not a de Polignac number, because 73634020421 - 2² = 73634020417 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 (73634020441) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 149056475 + ... + 149056968.

It is an arithmetic number, because the mean of its divisors is an integer number (10433970540).

Almost surely, 2^73634020421 is an apocalyptic number.

It is an amenable number.

73634020421 is a deficient number, since it is larger than the sum of its proper divisors (9837743899).

73634020421 is a wasteful number, since it uses less digits than its factorization.

73634020421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298113475.

The product of its (nonzero) digits is 24192, while the sum is 32.

The spelling of 73634020421 in words is "seventy-three billion, six hundred thirty-four million, twenty thousand, four hundred twenty-one".