51005056841278 has 4 divisors (see below), whose sum is σ = 76507585261920. Its totient is φ = 25502528420638.

The previous prime is 51005056841257. The next prime is 51005056841281. The reversal of 51005056841278 is 87214865050015.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12751264210318 + ... + 12751264210321.

It is an arithmetic number, because the mean of its divisors is an integer number (19126896315480).

Almost surely, 2^{51005056841278} is an apocalyptic number.

51005056841278 is a deficient number, since it is larger than the sum of its proper divisors (25502528420642).

51005056841278 is a wasteful number, since it uses less digits than its factorization.

51005056841278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25502528420641.

The product of its (nonzero) digits is 2688000, while the sum is 52.

The spelling of 51005056841278 in words is "fifty-one trillion, five billion, fifty-six million, eight hundred forty-one thousand, two hundred seventy-eight".