51959901563 has 2 divisors, whose sum is σ = 51959901564. Its totient is φ = 51959901562.

The previous prime is 51959901557. The next prime is 51959901607. The reversal of 51959901563 is 36510995915.

It is a happy number.

51959901563 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51959901563 - 2²² = 51955707259 is a prime.

It is not a weakly prime, because it can be changed into another prime (51959901503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25979950781 + 25979950782.

It is an arithmetic number, because the mean of its divisors is an integer number (25979950782).

Almost surely, 2^51959901563 is an apocalyptic number.

51959901563 is a deficient number, since it is larger than the sum of its proper divisors (1).

51959901563 is an equidigital number, since it uses as much as digits as its factorization.

51959901563 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1640250, while the sum is 53.

The spelling of 51959901563 in words is "fifty-one billion, nine hundred fifty-nine million, nine hundred one thousand, five hundred sixty-three".