605368028921 has 4 divisors (see below), whose sum is σ = 607054291200. Its totient is φ = 603681766644.

The previous prime is 605368028899. The next prime is 605368028939. The reversal of 605368028921 is 129820863506.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 605368028921 - 2²⁶ = 605300920057 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 605368028921.

It is not an unprimeable number, because it can be changed into a prime (605368028981) 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, 843130601 + ... + 843131318.

It is an arithmetic number, because the mean of its divisors is an integer number (151763572800).

Almost surely, 2^605368028921 is an apocalyptic number.

It is an amenable number.

605368028921 is a deficient number, since it is larger than the sum of its proper divisors (1686262279).

605368028921 is a wasteful number, since it uses less digits than its factorization.

605368028921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1686262278.

The product of its (nonzero) digits is 1244160, while the sum is 50.

The spelling of 605368028921 in words is "six hundred five billion, three hundred sixty-eight million, twenty-eight thousand, nine hundred twenty-one".