51106339969 has 2 divisors, whose sum is σ = 51106339970. Its totient is φ = 51106339968.

The previous prime is 51106339939. The next prime is 51106339993. The reversal of 51106339969 is 96993360115.

51106339969 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48218889744 + 2887450225 = 219588^2 + 53735^2 .

It is a cyclic number.

It is not a de Polignac number, because 51106339969 - 2¹⁹ = 51105815681 is a prime.

It is a super-2 number, since 2×51106339969² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (51106339939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25553169984 + 25553169985.

It is an arithmetic number, because the mean of its divisors is an integer number (25553169985).

Almost surely, 2^51106339969 is an apocalyptic number.

It is an amenable number.

51106339969 is a deficient number, since it is larger than the sum of its proper divisors (1).

51106339969 is an equidigital number, since it uses as much as digits as its factorization.

51106339969 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1180980, while the sum is 52.

The spelling of 51106339969 in words is "fifty-one billion, one hundred six million, three hundred thirty-nine thousand, nine hundred sixty-nine".