51566008651 has 2 divisors, whose sum is σ = 51566008652. Its totient is φ = 51566008650.

The previous prime is 51566008643. The next prime is 51566008667. The reversal of 51566008651 is 15680066515.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51566008651 - 2³ = 51566008643 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51566008598 and 51566008607.

It is not a weakly prime, because it can be changed into another prime (51566008691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25783004325 + 25783004326.

It is an arithmetic number, because the mean of its divisors is an integer number (25783004326).

Almost surely, 2^51566008651 is an apocalyptic number.

51566008651 is a deficient number, since it is larger than the sum of its proper divisors (1).

51566008651 is an equidigital number, since it uses as much as digits as its factorization.

51566008651 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216000, while the sum is 43.

The spelling of 51566008651 in words is "fifty-one billion, five hundred sixty-six million, eight thousand, six hundred fifty-one".