73673773533 has 32 divisors (see below), whose sum is σ = 110332108800. Its totient is φ = 48585135600.

The previous prime is 73673773421. The next prime is 73673773573. The reversal of 73673773533 is 33537737637.

It is a happy number.

73673773533 is a `hidden beast` number, since 7 + 3 + 6 + 7 + 37 + 73 + 533 = 666.

It is not a de Polignac number, because 73673773533 - 2¹² = 73673769437 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 73673773533.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73673773573) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 883198 + ... + 963008.

It is an arithmetic number, because the mean of its divisors is an integer number (3447878400).

Almost surely, 2^73673773533 is an apocalyptic number.

It is an amenable number.

73673773533 is a deficient number, since it is larger than the sum of its proper divisors (36658335267).

73673773533 is a wasteful number, since it uses less digits than its factorization.

73673773533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80190 (or 80184 counting only the distinct ones).

The product of its digits is 17503290, while the sum is 54.

The spelling of 73673773533 in words is "seventy-three billion, six hundred seventy-three million, seven hundred seventy-three thousand, five hundred thirty-three".