51606131558 has 8 divisors (see below), whose sum is σ = 77410162728. Its totient is φ = 25802743984.

The previous prime is 51606131539. The next prime is 51606131567. The reversal of 51606131558 is 85513160615.

51606131558 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 218285 + ... + 388407.

It is an arithmetic number, because the mean of its divisors is an integer number (9676270341).

Almost surely, 2^51606131558 is an apocalyptic number.

51606131558 is a deficient number, since it is larger than the sum of its proper divisors (25804031170).

51606131558 is a wasteful number, since it uses less digits than its factorization.

51606131558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321798.

The product of its (nonzero) digits is 108000, while the sum is 41.

The spelling of 51606131558 in words is "fifty-one billion, six hundred six million, one hundred thirty-one thousand, five hundred fifty-eight".