73021020430441 has 4 divisors (see below), whose sum is σ = 73023736912084. Its totient is φ = 73018303948800.

The previous prime is 73021020430403. The next prime is 73021020430487. The reversal of 73021020430441 is 14403402012037.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 65417296905216 + 7603723525225 = 8088096^2 + 2757485^2 .

It is a cyclic number.

It is not a de Polignac number, because 73021020430441 - 2³⁷ = 72883581476969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73021020230441) 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, 1358200500 + ... + 1358254261.

It is an arithmetic number, because the mean of its divisors is an integer number (18255934228021).

Almost surely, 2^{73021020430441} is an apocalyptic number.

It is an amenable number.

73021020430441 is a deficient number, since it is larger than the sum of its proper divisors (2716481643).

73021020430441 is a wasteful number, since it uses less digits than its factorization.

73021020430441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2716481642.

The product of its (nonzero) digits is 16128, while the sum is 31.

Adding to 73021020430441 its reverse (14403402012037), we get a palindrome (87424422442478).

The spelling of 73021020430441 in words is "seventy-three trillion, twenty-one billion, twenty million, four hundred thirty thousand, four hundred forty-one".