73454445437 has 8 divisors (see below), whose sum is σ = 74197037880. Its totient is φ = 72712153600.

The previous prime is 73454445433. The next prime is 73454445451.

73454445437 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 4 ways, for example, as 20160876121 + 53293569316 = 141989^2 + 230854^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 73454445437 - 2² = 73454445433 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73454445433) 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, 433313 + ... + 578505.

It is an arithmetic number, because the mean of its divisors is an integer number (9274629735).

Almost surely, 2^73454445437 is an apocalyptic number.

It is an amenable number.

73454445437 is a deficient number, since it is larger than the sum of its proper divisors (742592443).

73454445437 is a wasteful number, since it uses less digits than its factorization.

73454445437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150303.

The product of its digits is 11289600, while the sum is 50.

The spelling of 73454445437 in words is "seventy-three billion, four hundred fifty-four million, four hundred forty-five thousand, four hundred thirty-seven".