71170750989 has 24 divisors (see below), whose sum is σ = 111321747992. Its totient is φ = 43555397760.

The previous prime is 71170750979. The next prime is 71170751009. The reversal of 71170750989 is 98905707117.

It can be written as a sum of positive squares in 4 ways, for example, as 2130560964 + 69040190025 = 46158^2 + 262755^2 .

It is not a de Polignac number, because 71170750989 - 2⁹ = 71170750477 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71170750909) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1659202 + ... + 1701555.

Almost surely, 2^71170750989 is an apocalyptic number.

It is an amenable number.

71170750989 is a deficient number, since it is larger than the sum of its proper divisors (40150997003).

71170750989 is a wasteful number, since it uses less digits than its factorization.

71170750989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3360957 (or 3360954 counting only the distinct ones).

The product of its (nonzero) digits is 1111320, while the sum is 54.

The spelling of 71170750989 in words is "seventy-one billion, one hundred seventy million, seven hundred fifty thousand, nine hundred eighty-nine".