73044621187 has 8 divisors (see below), whose sum is σ = 75105760896. Its totient is φ = 70988058432.

The previous prime is 73044621149. The next prime is 73044621197. The reversal of 73044621187 is 78112644037.

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-73044621187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73044621197) 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, 1111858 + ... + 1175719.

It is an arithmetic number, because the mean of its divisors is an integer number (9388220112).

Almost surely, 2^73044621187 is an apocalyptic number.

73044621187 is a deficient number, since it is larger than the sum of its proper divisors (2061139709).

73044621187 is a wasteful number, since it uses less digits than its factorization.

73044621187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2288477.

The product of its (nonzero) digits is 225792, while the sum is 43.

The spelling of 73044621187 in words is "seventy-three billion, forty-four million, six hundred twenty-one thousand, one hundred eighty-seven".