51918526459 has 2 divisors, whose sum is σ = 51918526460. Its totient is φ = 51918526458.

The previous prime is 51918526441. The next prime is 51918526489. The reversal of 51918526459 is 95462581915.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51918526459 is a prime.

It is not a weakly prime, because it can be changed into another prime (51918526489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25959263229 + 25959263230.

It is an arithmetic number, because the mean of its divisors is an integer number (25959263230).

Almost surely, 2^51918526459 is an apocalyptic number.

51918526459 is a deficient number, since it is larger than the sum of its proper divisors (1).

51918526459 is an equidigital number, since it uses as much as digits as its factorization.

51918526459 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3888000, while the sum is 55.

The spelling of 51918526459 in words is "fifty-one billion, nine hundred eighteen million, five hundred twenty-six thousand, four hundred fifty-nine".