51105510505 has 32 divisors (see below), whose sum is σ = 72371202048. Its totient is φ = 33902668800.

The previous prime is 51105510499. The next prime is 51105510529. The reversal of 51105510505 is 50501550115.

It is not a de Polignac number, because 51105510505 - 2⁵ = 51105510473 is a prime.

It is a super-2 number, since 2×51105510505² (a number of 22 digits) contains 22 as substring.

It is a Duffinian 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, 5008689 + ... + 5018881.

It is an arithmetic number, because the mean of its divisors is an integer number (2261600064).

Almost surely, 2^51105510505 is an apocalyptic number.

It is an amenable number.

51105510505 is a deficient number, since it is larger than the sum of its proper divisors (21265691543).

51105510505 is a wasteful number, since it uses less digits than its factorization.

51105510505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14857.

The product of its (nonzero) digits is 3125, while the sum is 28.

The spelling of 51105510505 in words is "fifty-one billion, one hundred five million, five hundred ten thousand, five hundred five".