71003444377 has 2 divisors, whose sum is σ = 71003444378. Its totient is φ = 71003444376.

The previous prime is 71003444327. The next prime is 71003444419. The reversal of 71003444377 is 77344430017.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39368909056 + 31634535321 = 198416^2 + 177861^2 .

It is a cyclic number.

It is not a de Polignac number, because 71003444377 - 2¹⁹ = 71002920089 is a prime.

It is a super-2 number, since 2×71003444377² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (71003444327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35501722188 + 35501722189.

It is an arithmetic number, because the mean of its divisors is an integer number (35501722189).

Almost surely, 2^71003444377 is an apocalyptic number.

It is an amenable number.

71003444377 is a deficient number, since it is larger than the sum of its proper divisors (1).

71003444377 is an equidigital number, since it uses as much as digits as its factorization.

71003444377 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 197568, while the sum is 40.

The spelling of 71003444377 in words is "seventy-one billion, three million, four hundred forty-four thousand, three hundred seventy-seven".