73405044037 has 12 divisors (see below), whose sum is σ = 79620084324. Its totient is φ = 67644145920.

The previous prime is 73405043981. The next prime is 73405044061. The reversal of 73405044037 is 73044050437.

It can be written as a sum of positive squares in 6 ways, for example, as 9170169121 + 64234874916 = 95761^2 + 253446^2 .

It is not a de Polignac number, because 73405044037 - 2³¹ = 71257560389 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 73405043987 and 73405044005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73405044737) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 266014 + ... + 466447.

It is an arithmetic number, because the mean of its divisors is an integer number (6635007027).

Almost surely, 2^73405044037 is an apocalyptic number.

It is an amenable number.

73405044037 is a deficient number, since it is larger than the sum of its proper divisors (6215040287).

73405044037 is a wasteful number, since it uses less digits than its factorization.

73405044037 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 733080 (or 733067 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 37.

The spelling of 73405044037 in words is "seventy-three billion, four hundred five million, forty-four thousand, thirty-seven".