51700636459 has 2 divisors, whose sum is σ = 51700636460. Its totient is φ = 51700636458.

The previous prime is 51700636433. The next prime is 51700636483. The reversal of 51700636459 is 95463600715.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51700636459 - 2¹¹ = 51700634411 is a prime.

It is not a weakly prime, because it can be changed into another prime (51700636159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25850318229 + 25850318230.

It is an arithmetic number, because the mean of its divisors is an integer number (25850318230).

Almost surely, 2^51700636459 is an apocalyptic number.

51700636459 is a deficient number, since it is larger than the sum of its proper divisors (1).

51700636459 is an equidigital number, since it uses as much as digits as its factorization.

51700636459 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 680400, while the sum is 46.

The spelling of 51700636459 in words is "fifty-one billion, seven hundred million, six hundred thirty-six thousand, four hundred fifty-nine".