51650551507 has 2 divisors, whose sum is σ = 51650551508. Its totient is φ = 51650551506.

The previous prime is 51650551457. The next prime is 51650551559. The reversal of 51650551507 is 70515505615.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51650551507 - 2³⁵ = 17290813139 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51650551507.

It is not a weakly prime, because it can be changed into another prime (51650551207) 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, 25825275753 + 25825275754.

It is an arithmetic number, because the mean of its divisors is an integer number (25825275754).

Almost surely, 2^51650551507 is an apocalyptic number.

51650551507 is a deficient number, since it is larger than the sum of its proper divisors (1).

51650551507 is an equidigital number, since it uses as much as digits as its factorization.

51650551507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 131250, while the sum is 40.

The spelling of 51650551507 in words is "fifty-one billion, six hundred fifty million, five hundred fifty-one thousand, five hundred seven".