51486379928771 has 2 divisors, whose sum is σ = 51486379928772. Its totient is φ = 51486379928770.

The previous prime is 51486379928707. The next prime is 51486379928813. The reversal of 51486379928771 is 17782997368415.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51486379928771 - 2⁶ = 51486379928707 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51486379928692 and 51486379928701.

It is not a weakly prime, because it can be changed into another prime (51486379928701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25743189964385 + 25743189964386.

It is an arithmetic number, because the mean of its divisors is an integer number (25743189964386).

Almost surely, 2^{51486379928771} is an apocalyptic number.

51486379928771 is a deficient number, since it is larger than the sum of its proper divisors (1).

51486379928771 is an equidigital number, since it uses as much as digits as its factorization.

51486379928771 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1280240640, while the sum is 77.

The spelling of 51486379928771 in words is "fifty-one trillion, four hundred eighty-six billion, three hundred seventy-nine million, nine hundred twenty-eight thousand, seven hundred seventy-one".