51110505005 has 16 divisors (see below), whose sum is σ = 70121942400. Its totient is φ = 35033435712.

The previous prime is 51110504989. The next prime is 51110505007. The reversal of 51110505005 is 50050501115.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 51110505005 - 2⁴ = 51110504989 is a prime.

It is a super-2 number, since 2×51110505005² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51110505007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 196055 + ... + 375044.

It is an arithmetic number, because the mean of its divisors is an integer number (4382621400).

Almost surely, 2^51110505005 is an apocalyptic number.

It is an amenable number.

51110505005 is a deficient number, since it is larger than the sum of its proper divisors (19011437395).

51110505005 is a wasteful number, since it uses less digits than its factorization.

51110505005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 573668.

The product of its (nonzero) digits is 625, while the sum is 23.

The spelling of 51110505005 in words is "fifty-one billion, one hundred ten million, five hundred five thousand, five".