51135752267 has 2 divisors, whose sum is σ = 51135752268. Its totient is φ = 51135752266.

The previous prime is 51135752251. The next prime is 51135752303. The reversal of 51135752267 is 76225753115.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51135752267 - 2⁴ = 51135752251 is a prime.

It is a super-2 number, since 2×51135752267² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (51135782267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25567876133 + 25567876134.

It is an arithmetic number, because the mean of its divisors is an integer number (25567876134).

Almost surely, 2^51135752267 is an apocalyptic number.

51135752267 is a deficient number, since it is larger than the sum of its proper divisors (1).

51135752267 is an equidigital number, since it uses as much as digits as its factorization.

51135752267 is an evil number, because the sum of its binary digits is even.

The product of its digits is 441000, while the sum is 44.

The spelling of 51135752267 in words is "fifty-one billion, one hundred thirty-five million, seven hundred fifty-two thousand, two hundred sixty-seven".