51312703266 has 48 divisors (see below), whose sum is σ = 124562550528. Its totient is φ = 15129050400.

The previous prime is 51312703261. The next prime is 51312703279. The reversal of 51312703266 is 66230721315.

51312703266 is a `hidden beast` number, since 513 + 12 + 70 + 3 + 2 + 66 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 51312703266.

It is not an unprimeable number, because it can be changed into a prime (51312703261) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3494770 + ... + 3509421.

It is an arithmetic number, because the mean of its divisors is an integer number (2595053136).

Almost surely, 2^51312703266 is an apocalyptic number.

51312703266 is an abundant number, since it is smaller than the sum of its proper divisors (73249847262).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51312703266 is a wasteful number, since it uses less digits than its factorization.

51312703266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7004247 (or 7004244 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The spelling of 51312703266 in words is "fifty-one billion, three hundred twelve million, seven hundred three thousand, two hundred sixty-six".