51704613013 has 2 divisors, whose sum is σ = 51704613014. Its totient is φ = 51704613012.

The previous prime is 51704612983. The next prime is 51704613047. The reversal of 51704613013 is 31031640715.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51375662244 + 328950769 = 226662^2 + 18137^2 .

It is a cyclic number.

It is not a de Polignac number, because 51704613013 - 2²¹ = 51702515861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51704613713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25852306506 + 25852306507.

It is an arithmetic number, because the mean of its divisors is an integer number (25852306507).

Almost surely, 2^51704613013 is an apocalyptic number.

It is an amenable number.

51704613013 is a deficient number, since it is larger than the sum of its proper divisors (1).

51704613013 is an equidigital number, since it uses as much as digits as its factorization.

51704613013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7560, while the sum is 31.

The spelling of 51704613013 in words is "fifty-one billion, seven hundred four million, six hundred thirteen thousand, thirteen".