51456746879 has 2 divisors, whose sum is σ = 51456746880. Its totient is φ = 51456746878.

The previous prime is 51456746867. The next prime is 51456746881. The reversal of 51456746879 is 97864765415.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51456746879 - 2⁸ = 51456746623 is a prime.

Together with 51456746881, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51456742879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25728373439 + 25728373440.

It is an arithmetic number, because the mean of its divisors is an integer number (25728373440).

Almost surely, 2^51456746879 is an apocalyptic number.

51456746879 is a deficient number, since it is larger than the sum of its proper divisors (1).

51456746879 is an equidigital number, since it uses as much as digits as its factorization.

51456746879 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 50803200, while the sum is 62.

The spelling of 51456746879 in words is "fifty-one billion, four hundred fifty-six million, seven hundred forty-six thousand, eight hundred seventy-nine".