51380772665266 has 16 divisors (see below), whose sum is σ = 84078251784288. Its totient is φ = 23354723392000.

The previous prime is 51380772665239. The next prime is 51380772665279. The reversal of 51380772665266 is 66256627708315.

It is a junction number, because it is equal to n+sod(n) for n = 51380772665198 and 51380772665207.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5607055 + ... + 11584498.

It is an arithmetic number, because the mean of its divisors is an integer number (5254890736518).

Almost surely, 2^{51380772665266} is an apocalyptic number.

51380772665266 is a deficient number, since it is larger than the sum of its proper divisors (32697479119022).

51380772665266 is a wasteful number, since it uses less digits than its factorization.

51380772665266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17327417.

The product of its (nonzero) digits is 152409600, while the sum is 64.

The spelling of 51380772665266 in words is "fifty-one trillion, three hundred eighty billion, seven hundred seventy-two million, six hundred sixty-five thousand, two hundred sixty-six".