51558708478 has 8 divisors (see below), whose sum is σ = 77378623272. Its totient is φ = 25765834056.

The previous prime is 51558708473. The next prime is 51558708479. The reversal of 51558708478 is 87480785515.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51558708473) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 6755325 + ... + 6762952.

It is an arithmetic number, because the mean of its divisors is an integer number (9672327909).

Almost surely, 2^51558708478 is an apocalyptic number.

51558708478 is a deficient number, since it is larger than the sum of its proper divisors (25819914794).

51558708478 is a wasteful number, since it uses less digits than its factorization.

51558708478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13520186.

The product of its (nonzero) digits is 12544000, while the sum is 58.

The spelling of 51558708478 in words is "fifty-one billion, five hundred fifty-eight million, seven hundred eight thousand, four hundred seventy-eight".