51718883505055 has 32 divisors (see below), whose sum is σ = 66938492275200. Its totient is φ = 38134252168320.

The previous prime is 51718883505031. The next prime is 51718883505061. The reversal of 51718883505055 is 55050538881715.

It is not a de Polignac number, because 51718883505055 - 2³¹ = 51716736021407 is a prime.

It is a super-2 number, since 2×51718883505055² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51718883504984 and 51718883505002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1473496896 + ... + 1473531994.

It is an arithmetic number, because the mean of its divisors is an integer number (2091827883600).

Almost surely, 2^{51718883505055} is an apocalyptic number.

51718883505055 is a deficient number, since it is larger than the sum of its proper divisors (15219608770145).

51718883505055 is a wasteful number, since it uses less digits than its factorization.

51718883505055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68991.

The product of its (nonzero) digits is 33600000, while the sum is 61.

The spelling of 51718883505055 in words is "fifty-one trillion, seven hundred eighteen billion, eight hundred eighty-three million, five hundred five thousand, fifty-five".