71503971359 has 2 divisors, whose sum is σ = 71503971360. Its totient is φ = 71503971358.

The previous prime is 71503971353. The next prime is 71503971523. The reversal of 71503971359 is 95317930517.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 71503971359 - 2²⁴ = 71487194143 is a prime.

It is a super-2 number, since 2×71503971359² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71503971353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35751985679 + 35751985680.

It is an arithmetic number, because the mean of its divisors is an integer number (35751985680).

Almost surely, 2^71503971359 is an apocalyptic number.

71503971359 is a deficient number, since it is larger than the sum of its proper divisors (1).

71503971359 is an equidigital number, since it uses as much as digits as its factorization.

71503971359 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 893025, while the sum is 50.

The spelling of 71503971359 in words is "seventy-one billion, five hundred three million, nine hundred seventy-one thousand, three hundred fifty-nine".