51618541259 has 2 divisors, whose sum is σ = 51618541260. Its totient is φ = 51618541258.

The previous prime is 51618541253. The next prime is 51618541279. The reversal of 51618541259 is 95214581615.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51618541259 - 2³² = 47323573963 is a prime.

It is not a weakly prime, because it can be changed into another prime (51618541253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25809270629 + 25809270630.

It is an arithmetic number, because the mean of its divisors is an integer number (25809270630).

Almost surely, 2^51618541259 is an apocalyptic number.

51618541259 is a deficient number, since it is larger than the sum of its proper divisors (1).

51618541259 is an equidigital number, since it uses as much as digits as its factorization.

51618541259 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 432000, while the sum is 47.

The spelling of 51618541259 in words is "fifty-one billion, six hundred eighteen million, five hundred forty-one thousand, two hundred fifty-nine".