71258617397 has 16 divisors (see below), whose sum is σ = 78833986560. Its totient is φ = 63869324400.

The previous prime is 71258617291. The next prime is 71258617403. The reversal of 71258617397 is 79371685217.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 71258617397 - 2⁸ = 71258617141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71258617597) 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 in 15 ways as a sum of consecutive naturals, for example, 368804 + ... + 527762.

It is an arithmetic number, because the mean of its divisors is an integer number (4927124160).

Almost surely, 2^71258617397 is an apocalyptic number.

It is an amenable number.

71258617397 is a deficient number, since it is larger than the sum of its proper divisors (7575369163).

71258617397 is a wasteful number, since it uses less digits than its factorization.

71258617397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159544.

The product of its digits is 4445280, while the sum is 56.

The spelling of 71258617397 in words is "seventy-one billion, two hundred fifty-eight million, six hundred seventeen thousand, three hundred ninety-seven".