71523708137 has 12 divisors (see below), whose sum is σ = 83285744256. Its totient is φ = 61243628040.

The previous prime is 71523708083. The next prime is 71523708187. The reversal of 71523708137 is 73180732517.

It is not a de Polignac number, because 71523708137 - 2⁸ = 71523707881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71523708187) 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 11 ways as a sum of consecutive naturals, for example, 694289 + ... + 790622.

It is an arithmetic number, because the mean of its divisors is an integer number (6940478688).

Almost surely, 2^71523708137 is an apocalyptic number.

It is an amenable number.

71523708137 is a deficient number, since it is larger than the sum of its proper divisors (11762036119).

71523708137 is a wasteful number, since it uses less digits than its factorization.

71523708137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1485908 (or 1485901 counting only the distinct ones).

The product of its (nonzero) digits is 246960, while the sum is 44.

The spelling of 71523708137 in words is "seventy-one billion, five hundred twenty-three million, seven hundred eight thousand, one hundred thirty-seven".