51342925979 has 2 divisors, whose sum is σ = 51342925980. Its totient is φ = 51342925978.

The previous prime is 51342925973. The next prime is 51342925999. The reversal of 51342925979 is 97952924315.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51342925979 is a prime.

It is not a weakly prime, because it can be changed into another prime (51342925973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25671462989 + 25671462990.

It is an arithmetic number, because the mean of its divisors is an integer number (25671462990).

Almost surely, 2^51342925979 is an apocalyptic number.

51342925979 is a deficient number, since it is larger than the sum of its proper divisors (1).

51342925979 is an equidigital number, since it uses as much as digits as its factorization.

51342925979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6123600, while the sum is 56.

The spelling of 51342925979 in words is "fifty-one billion, three hundred forty-two million, nine hundred twenty-five thousand, nine hundred seventy-nine".