51862743613 has 2 divisors, whose sum is σ = 51862743614. Its totient is φ = 51862743612.

The previous prime is 51862743587. The next prime is 51862743637. The reversal of 51862743613 is 31634726815.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51814051129 + 48692484 = 227627^2 + 6978^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51862743613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51862743313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25931371806 + 25931371807.

It is an arithmetic number, because the mean of its divisors is an integer number (25931371807).

Almost surely, 2^51862743613 is an apocalyptic number.

It is an amenable number.

51862743613 is a deficient number, since it is larger than the sum of its proper divisors (1).

51862743613 is an equidigital number, since it uses as much as digits as its factorization.

51862743613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 725760, while the sum is 46.

The spelling of 51862743613 in words is "fifty-one billion, eight hundred sixty-two million, seven hundred forty-three thousand, six hundred thirteen".