51110560605555 has 96 divisors (see below), whose sum is σ = 96856723192320. Its totient is φ = 24726757040640.

The previous prime is 51110560605529. The next prime is 51110560605557. The reversal of 51110560605555 is 55550606501115.

51110560605555 is a `hidden beast` number, since 5 + 11 + 10 + 560 + 60 + 5 + 5 + 5 + 5 = 666.

It is not a de Polignac number, because 51110560605555 - 2¹² = 51110560601459 is a prime.

It is a super-2 number, since 2×51110560605555² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 51110560605555.

It is not an unprimeable number, because it can be changed into a prime (51110560605557) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 425623632 + ... + 425743698.

It is an arithmetic number, because the mean of its divisors is an integer number (1008924199920).

Almost surely, 2^{51110560605555} is an apocalyptic number.

51110560605555 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

51110560605555 is a deficient number, since it is larger than the sum of its proper divisors (45746162586765).

51110560605555 is a wasteful number, since it uses less digits than its factorization.

51110560605555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121961 (or 121958 counting only the distinct ones).

The product of its (nonzero) digits is 562500, while the sum is 45.

The spelling of 51110560605555 in words is "fifty-one trillion, one hundred ten billion, five hundred sixty million, six hundred five thousand, five hundred fifty-five".