771044113321 has 4 divisors (see below), whose sum is σ = 771055692372. Its totient is φ = 771032534272.

The previous prime is 771044113249. The next prime is 771044113331. The reversal of 771044113321 is 123311440177.

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 136854863721 + 634189249600 = 369939^2 + 796360^2 .

It is a cyclic number.

It is not a de Polignac number, because 771044113321 - 2⁷ = 771044113193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (771044113331) 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, 5689060 + ... + 5823013.

It is an arithmetic number, because the mean of its divisors is an integer number (192763923093).

Almost surely, 2^771044113321 is an apocalyptic number.

It is an amenable number.

771044113321 is a deficient number, since it is larger than the sum of its proper divisors (11579051).

771044113321 is a wasteful number, since it uses less digits than its factorization.

771044113321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11579050.

The product of its (nonzero) digits is 14112, while the sum is 34.

Adding to 771044113321 its reverse (123311440177), we get a palindrome (894355553498).

The spelling of 771044113321 in words is "seven hundred seventy-one billion, forty-four million, one hundred thirteen thousand, three hundred twenty-one".