73667439021 has 16 divisors (see below), whose sum is σ = 107934781248. Its totient is φ = 44321040000.

The previous prime is 73667439017. The next prime is 73667439047. The reversal of 73667439021 is 12093476637.

It is not a de Polignac number, because 73667439021 - 2² = 73667439017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73667439121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8142730 + ... + 8151771.

It is an arithmetic number, because the mean of its divisors is an integer number (6745923828).

Almost surely, 2^73667439021 is an apocalyptic number.

It is an amenable number.

73667439021 is a deficient number, since it is larger than the sum of its proper divisors (34267342227).

73667439021 is a wasteful number, since it uses less digits than its factorization.

73667439021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16294652.

The product of its (nonzero) digits is 1143072, while the sum is 48.

The spelling of 73667439021 in words is "seventy-three billion, six hundred sixty-seven million, four hundred thirty-nine thousand, twenty-one".