51505556551006 has 16 divisors (see below), whose sum is σ = 77303356179840. Its totient is φ = 25737772190040.

The previous prime is 51505556550983. The next prime is 51505556551021. The reversal of 51505556551006 is 60015565550515.

It is a super-2 number, since 2×51505556551006² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105878425 + ... + 106363771.

It is an arithmetic number, because the mean of its divisors is an integer number (4831459761240).

Almost surely, 2^{51505556551006} is an apocalyptic number.

51505556551006 is a deficient number, since it is larger than the sum of its proper divisors (25797799628834).

51505556551006 is a wasteful number, since it uses less digits than its factorization.

51505556551006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 516159.

The product of its (nonzero) digits is 2812500, while the sum is 49.

The spelling of 51505556551006 in words is "fifty-one trillion, five hundred five billion, five hundred fifty-six million, five hundred fifty-one thousand, six".