51312703211 has 16 divisors (see below), whose sum is σ = 66180291840. Its totient is φ = 38605166880.

The previous prime is 51312703207. The next prime is 51312703249. The reversal of 51312703211 is 11230721315.

It is not a de Polignac number, because 51312703211 - 2² = 51312703207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51312703201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11487401 + ... + 11491866.

It is an arithmetic number, because the mean of its divisors is an integer number (4136268240).

Almost surely, 2^51312703211 is an apocalyptic number.

51312703211 is a deficient number, since it is larger than the sum of its proper divisors (14867588629).

51312703211 is a wasteful number, since it uses less digits than its factorization.

51312703211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22979314.

The product of its (nonzero) digits is 1260, while the sum is 26.

The spelling of 51312703211 in words is "fifty-one billion, three hundred twelve million, seven hundred three thousand, two hundred eleven".