51505605044 has 12 divisors (see below), whose sum is σ = 90137069568. Its totient is φ = 25752156600.

The previous prime is 51505605031. The next prime is 51505605071. The reversal of 51505605044 is 44050650515.

It is a super-3 number, since 3×51505605044³ (a number of 33 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51505604995 and 51505605013.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48179 + ... + 324549.

It is an arithmetic number, because the mean of its divisors is an integer number (7511422464).

Almost surely, 2^51505605044 is an apocalyptic number.

It is an amenable number.

51505605044 is a deficient number, since it is larger than the sum of its proper divisors (38631464524).

51505605044 is a wasteful number, since it uses less digits than its factorization.

51505605044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322966 (or 322964 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 35.

The spelling of 51505605044 in words is "fifty-one billion, five hundred five million, six hundred five thousand, forty-four".