804506720127553 has 4 divisors (see below), whose sum is σ = 804509794862788. Its totient is φ = 804503645392320.

The previous prime is 804506720127527. The next prime is 804506720127563. The reversal of 804506720127553 is 355721027605408.

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 758939522006449 + 45567198121104 = 27548857^2 + 6750348^2 .

It is a cyclic number.

It is not a de Polignac number, because 804506720127553 - 2¹⁷ = 804506719996481 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 804506720127494 and 804506720127503.

It is not an unprimeable number, because it can be changed into a prime (804506720127563) 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, 1536975108 + ... + 1537498453.

It is an arithmetic number, because the mean of its divisors is an integer number (201127448715697).

Almost surely, 2^{804506720127553} is an apocalyptic number.

It is an amenable number.

804506720127553 is a deficient number, since it is larger than the sum of its proper divisors (3074735235).

804506720127553 is a wasteful number, since it uses less digits than its factorization.

804506720127553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3074735234.

The product of its (nonzero) digits is 14112000, while the sum is 55.

The spelling of 804506720127553 in words is "eight hundred four trillion, five hundred six billion, seven hundred twenty million, one hundred twenty-seven thousand, five hundred fifty-three".