51650643333431 has 2 divisors, whose sum is σ = 51650643333432. Its totient is φ = 51650643333430.

The previous prime is 51650643333397. The next prime is 51650643333451. The reversal of 51650643333431 is 13433334605615.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51650643333431 is a prime.

It is a super-2 number, since 2×51650643333431² (a number of 28 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51650643333451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25825321666715 + 25825321666716.

It is an arithmetic number, because the mean of its divisors is an integer number (25825321666716).

Almost surely, 2^{51650643333431} is an apocalyptic number.

51650643333431 is a deficient number, since it is larger than the sum of its proper divisors (1).

51650643333431 is an equidigital number, since it uses as much as digits as its factorization.

51650643333431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3499200, while the sum is 47.

The spelling of 51650643333431 in words is "fifty-one trillion, six hundred fifty billion, six hundred forty-three million, three hundred thirty-three thousand, four hundred thirty-one".