51012023311321 has 4 divisors (see below), whose sum is σ = 51012080534032. Its totient is φ = 51011966088612.

The previous prime is 51012023311307. The next prime is 51012023311393. The reversal of 51012023311321 is 12311332021015.

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 51012023311321 - 2⁵ = 51012023311289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51012023711321) 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, 27252651 + ... + 29064256.

It is an arithmetic number, because the mean of its divisors is an integer number (12753020133508).

Almost surely, 2^{51012023311321} is an apocalyptic number.

It is an amenable number.

51012023311321 is a deficient number, since it is larger than the sum of its proper divisors (57222711).

51012023311321 is an equidigital number, since it uses as much as digits as its factorization.

51012023311321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57222710.

The product of its (nonzero) digits is 1080, while the sum is 25.

Adding to 51012023311321 its reverse (12311332021015), we get a palindrome (63323355332336).

The spelling of 51012023311321 in words is "fifty-one trillion, twelve billion, twenty-three million, three hundred eleven thousand, three hundred twenty-one".