51266866215 has 8 divisors (see below), whose sum is σ = 82026985968. Its totient is φ = 27342328640.

The previous prime is 51266866181. The next prime is 51266866243.

51266866215 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51266866215 - 2⁷ = 51266866087 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1708895526 + ... + 1708895555.

It is an arithmetic number, because the mean of its divisors is an integer number (10253373246).

Almost surely, 2^51266866215 is an apocalyptic number.

51266866215 is a deficient number, since it is larger than the sum of its proper divisors (30760119753).

51266866215 is a wasteful number, since it uses less digits than its factorization.

51266866215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3417791089.

The product of its digits is 1036800, while the sum is 48.

The spelling of 51266866215 in words is "fifty-one billion, two hundred sixty-six million, eight hundred sixty-six thousand, two hundred fifteen".