51102326839 has 2 divisors, whose sum is σ = 51102326840. Its totient is φ = 51102326838.

The previous prime is 51102326809. The next prime is 51102326879. The reversal of 51102326839 is 93862320115.

It is an a-pointer prime, because the next prime (51102326879) can be obtained adding 51102326839 to its sum of digits (40).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51102326839 is a prime.

It is a super-2 number, since 2×51102326839² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51102326809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25551163419 + 25551163420.

It is an arithmetic number, because the mean of its divisors is an integer number (25551163420).

Almost surely, 2^51102326839 is an apocalyptic number.

51102326839 is a deficient number, since it is larger than the sum of its proper divisors (1).

51102326839 is an equidigital number, since it uses as much as digits as its factorization.

51102326839 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 77760, while the sum is 40.

The spelling of 51102326839 in words is "fifty-one billion, one hundred two million, three hundred twenty-six thousand, eight hundred thirty-nine".