51238660558 has 16 divisors (see below), whose sum is σ = 80155200384. Its totient is φ = 24537300480.

The previous prime is 51238660553. The next prime is 51238660559. The reversal of 51238660558 is 85506683215.

It is a super-3 number, since 3×51238660558³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51238660553) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 4253935 + ... + 4265962.

It is an arithmetic number, because the mean of its divisors is an integer number (5009700024).

Almost surely, 2^51238660558 is an apocalyptic number.

51238660558 is a deficient number, since it is larger than the sum of its proper divisors (28916539826).

51238660558 is a wasteful number, since it uses less digits than its factorization.

51238660558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8520027.

The product of its (nonzero) digits is 1728000, while the sum is 49.

The spelling of 51238660558 in words is "fifty-one billion, two hundred thirty-eight million, six hundred sixty thousand, five hundred fifty-eight".