71261226341377 has 2 divisors, whose sum is σ = 71261226341378. Its totient is φ = 71261226341376.

The previous prime is 71261226341341. The next prime is 71261226341447. The reversal of 71261226341377 is 77314362216217.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64589125533696 + 6672100807681 = 8036736^2 + 2583041^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71261226341377 is a prime.

It is a super-2 number, since 2×71261226341377² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (71261226341777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35630613170688 + 35630613170689.

It is an arithmetic number, because the mean of its divisors is an integer number (35630613170689).

Almost surely, 2^{71261226341377} is an apocalyptic number.

It is an amenable number.

71261226341377 is a deficient number, since it is larger than the sum of its proper divisors (1).

71261226341377 is an equidigital number, since it uses as much as digits as its factorization.

71261226341377 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3556224, while the sum is 52.

The spelling of 71261226341377 in words is "seventy-one trillion, two hundred sixty-one billion, two hundred twenty-six million, three hundred forty-one thousand, three hundred seventy-seven".