51010655566 has 16 divisors (see below), whose sum is σ = 87248995344. Its totient is φ = 22158474624.

The previous prime is 51010655551. The next prime is 51010655581. The reversal of 51010655566 is 66555601015.

It is an interprime number because it is at equal distance from previous prime (51010655551) and next prime (51010655581).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57703920 + ... + 57704803.

It is an arithmetic number, because the mean of its divisors is an integer number (5453062209).

Almost surely, 2^51010655566 is an apocalyptic number.

51010655566 is a deficient number, since it is larger than the sum of its proper divisors (36238339778).

51010655566 is a wasteful number, since it uses less digits than its factorization.

51010655566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115408755.

The product of its (nonzero) digits is 135000, while the sum is 40.

The spelling of 51010655566 in words is "fifty-one billion, ten million, six hundred fifty-five thousand, five hundred sixty-six".