51860669479 has 2 divisors, whose sum is σ = 51860669480. Its totient is φ = 51860669478.

The previous prime is 51860669437. The next prime is 51860669503. The reversal of 51860669479 is 97496606815.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51860669479 - 2¹⁹ = 51860145191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51860669429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25930334739 + 25930334740.

It is an arithmetic number, because the mean of its divisors is an integer number (25930334740).

Almost surely, 2^51860669479 is an apocalyptic number.

51860669479 is a deficient number, since it is larger than the sum of its proper divisors (1).

51860669479 is an equidigital number, since it uses as much as digits as its factorization.

51860669479 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19595520, while the sum is 61.

The spelling of 51860669479 in words is "fifty-one billion, eight hundred sixty million, six hundred sixty-nine thousand, four hundred seventy-nine".