51312251460211 has 4 divisors (see below), whose sum is σ = 58642573097392. Its totient is φ = 43981929823032.

The previous prime is 51312251460161. The next prime is 51312251460227. The reversal of 51312251460211 is 11206415221315.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51312251460211 - 2⁷ = 51312251460083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51312251460241) 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, 3665160818580 + ... + 3665160818593.

It is an arithmetic number, because the mean of its divisors is an integer number (14660643274348).

Almost surely, 2^{51312251460211} is an apocalyptic number.

51312251460211 is a deficient number, since it is larger than the sum of its proper divisors (7330321637181).

51312251460211 is an equidigital number, since it uses as much as digits as its factorization.

51312251460211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7330321637180.

The product of its (nonzero) digits is 14400, while the sum is 34.

Adding to 51312251460211 its reverse (11206415221315), we get a palindrome (62518666681526).

The spelling of 51312251460211 in words is "fifty-one trillion, three hundred twelve billion, two hundred fifty-one million, four hundred sixty thousand, two hundred eleven".