51185134786814 has 24 divisors (see below), whose sum is σ = 89342207311968. Its totient is φ = 21929272632960.

The previous prime is 51185134786811. The next prime is 51185134786847. The reversal of 51185134786814 is 41868743158115.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51185134786811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 85577894 + ... + 86173929.

It is an arithmetic number, because the mean of its divisors is an integer number (3722591971332).

Almost surely, 2^{51185134786814} is an apocalyptic number.

51185134786814 is a deficient number, since it is larger than the sum of its proper divisors (38157072525154).

51185134786814 is a wasteful number, since it uses less digits than its factorization.

51185134786814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171754880 (or 171754873 counting only the distinct ones).

The product of its digits is 25804800, while the sum is 62.

The spelling of 51185134786814 in words is "fifty-one trillion, one hundred eighty-five billion, one hundred thirty-four million, seven hundred eighty-six thousand, eight hundred fourteen".