51118775475578 has 8 divisors (see below), whose sum is σ = 76678363382880. Its totient is φ = 25559321014620.

The previous prime is 51118775475539. The next prime is 51118775475583. The reversal of 51118775475578 is 87557457781115.

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

It is a super-2 number, since 2×51118775475578² (a number of 28 digits) contains 22 as substring.

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, 32398358 + ... + 33939521.

It is an arithmetic number, because the mean of its divisors is an integer number (9584795422860).

Almost surely, 2^{51118775475578} is an apocalyptic number.

51118775475578 is a deficient number, since it is larger than the sum of its proper divisors (25559587907302).

51118775475578 is a wasteful number, since it uses less digits than its factorization.

51118775475578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66723172.

The product of its digits is 384160000, while the sum is 71.

The spelling of 51118775475578 in words is "fifty-one trillion, one hundred eighteen billion, seven hundred seventy-five million, four hundred seventy-five thousand, five hundred seventy-eight".