51246505266 has 32 divisors (see below), whose sum is σ = 112614969600. Its totient is φ = 15417520080.

The previous prime is 51246505249. The next prime is 51246505279. The reversal of 51246505266 is 66250564215.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2783856 + ... + 2802203.

It is an arithmetic number, because the mean of its divisors is an integer number (3519217800).

Almost surely, 2^51246505266 is an apocalyptic number.

51246505266 is an abundant number, since it is smaller than the sum of its proper divisors (61368464334).

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

51246505266 is a wasteful number, since it uses less digits than its factorization.

51246505266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5586214.

The product of its (nonzero) digits is 432000, while the sum is 42.

The spelling of 51246505266 in words is "fifty-one billion, two hundred forty-six million, five hundred five thousand, two hundred sixty-six".