73466537281 has 4 divisors (see below), whose sum is σ = 73467250864. Its totient is φ = 73465823700.

The previous prime is 73466537257. The next prime is 73466537297. The reversal of 73466537281 is 18273566437.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 73466537281 - 2¹⁹ = 73466012993 is a prime.

It is a super-2 number, since 2×73466537281² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73466535281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 169635 + ... + 419176.

It is an arithmetic number, because the mean of its divisors is an integer number (18366812716).

Almost surely, 2^73466537281 is an apocalyptic number.

It is an amenable number.

73466537281 is a deficient number, since it is larger than the sum of its proper divisors (713583).

73466537281 is a wasteful number, since it uses less digits than its factorization.

73466537281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 713582.

The product of its digits is 5080320, while the sum is 52.

The spelling of 73466537281 in words is "seventy-three billion, four hundred sixty-six million, five hundred thirty-seven thousand, two hundred eighty-one".