51205308299 has 2 divisors, whose sum is σ = 51205308300. Its totient is φ = 51205308298.

The previous prime is 51205308277. The next prime is 51205308359. The reversal of 51205308299 is 99280350215.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51205308299 - 2¹² = 51205304203 is a prime.

It is not a weakly prime, because it can be changed into another prime (51205308239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25602654149 + 25602654150.

It is an arithmetic number, because the mean of its divisors is an integer number (25602654150).

Almost surely, 2^51205308299 is an apocalyptic number.

51205308299 is a deficient number, since it is larger than the sum of its proper divisors (1).

51205308299 is an equidigital number, since it uses as much as digits as its factorization.

51205308299 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 194400, while the sum is 44.

The spelling of 51205308299 in words is "fifty-one billion, two hundred five million, three hundred eight thousand, two hundred ninety-nine".