51100005506 has 32 divisors (see below), whose sum is σ = 88083072000. Its totient is φ = 21988806480.

The previous prime is 51100005499. The next prime is 51100005581. The reversal of 51100005506 is 60550000115.

It is a super-2 number, since 2×51100005506² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 541091 + ... + 628473.

It is an arithmetic number, because the mean of its divisors is an integer number (2752596000).

Almost surely, 2^51100005506 is an apocalyptic number.

51100005506 is a deficient number, since it is larger than the sum of its proper divisors (36983066494).

51100005506 is a wasteful number, since it uses less digits than its factorization.

51100005506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88814.

The product of its (nonzero) digits is 750, while the sum is 23.

The spelling of 51100005506 in words is "fifty-one billion, one hundred million, five thousand, five hundred six".