51306652643 has 2 divisors, whose sum is σ = 51306652644. Its totient is φ = 51306652642.

The previous prime is 51306652633. The next prime is 51306652729. The reversal of 51306652643 is 34625660315.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51306652643 - 2²⁰ = 51305604067 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51306652643.

It is not a weakly prime, because it can be changed into another prime (51306652633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25653326321 + 25653326322.

It is an arithmetic number, because the mean of its divisors is an integer number (25653326322).

Almost surely, 2^51306652643 is an apocalyptic number.

51306652643 is a deficient number, since it is larger than the sum of its proper divisors (1).

51306652643 is an equidigital number, since it uses as much as digits as its factorization.

51306652643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 388800, while the sum is 41.

The spelling of 51306652643 in words is "fifty-one billion, three hundred six million, six hundred fifty-two thousand, six hundred forty-three".