73055725321 has 2 divisors, whose sum is σ = 73055725322. Its totient is φ = 73055725320.

The previous prime is 73055725297. The next prime is 73055725339. The reversal of 73055725321 is 12352755037.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72924302025 + 131423296 = 270045^2 + 11464^2 .

It is a cyclic number.

It is not a de Polignac number, because 73055725321 - 2³¹ = 70908241673 is a prime.

It is not a weakly prime, because it can be changed into another prime (73055725381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36527862660 + 36527862661.

It is an arithmetic number, because the mean of its divisors is an integer number (36527862661).

Almost surely, 2^73055725321 is an apocalyptic number.

It is an amenable number.

73055725321 is a deficient number, since it is larger than the sum of its proper divisors (1).

73055725321 is an equidigital number, since it uses as much as digits as its factorization.

73055725321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 220500, while the sum is 40.

The spelling of 73055725321 in words is "seventy-three billion, fifty-five million, seven hundred twenty-five thousand, three hundred twenty-one".