51655257711 has 48 divisors (see below), whose sum is σ = 78557326848. Its totient is φ = 33912496800.

The previous prime is 51655257677. The next prime is 51655257713. The reversal of 51655257711 is 11775255615.

51655257711 is a `hidden beast` number, since 5 + 1 + 65 + 5 + 2 + 577 + 11 = 666.

It is not a de Polignac number, because 51655257711 - 2¹⁴ = 51655241327 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51655257713) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 27966190 + ... + 27968036.

It is an arithmetic number, because the mean of its divisors is an integer number (1636610976).

Almost surely, 2^51655257711 is an apocalyptic number.

51655257711 is a deficient number, since it is larger than the sum of its proper divisors (26902069137).

51655257711 is a wasteful number, since it uses less digits than its factorization.

51655257711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3554 (or 3542 counting only the distinct ones).

The product of its digits is 367500, while the sum is 45.

The spelling of 51655257711 in words is "fifty-one billion, six hundred fifty-five million, two hundred fifty-seven thousand, seven hundred eleven".