51108910378 has 4 divisors (see below), whose sum is σ = 76663365570. Its totient is φ = 25554455188.

The previous prime is 51108910343. The next prime is 51108910387. The reversal of 51108910378 is 87301980115.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 32215583169 + 18893327209 = 179487^2 + 137453^2 .

It is a super-2 number, since 2×51108910378² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 12777227593 + ... + 12777227596.

Almost surely, 2^51108910378 is an apocalyptic number.

51108910378 is a deficient number, since it is larger than the sum of its proper divisors (25554455192).

51108910378 is a wasteful number, since it uses less digits than its factorization.

51108910378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25554455191.

The product of its (nonzero) digits is 60480, while the sum is 43.

The spelling of 51108910378 in words is "fifty-one billion, one hundred eight million, nine hundred ten thousand, three hundred seventy-eight".