71036026531 has 12 divisors (see below), whose sum is σ = 72886451592. Its totient is φ = 69231377376.

The previous prime is 71036026487. The next prime is 71036026573. The reversal of 71036026531 is 13562063017.

It is a de Polignac number, because none of the positive numbers 2^k-71036026531 is a prime.

It is a super-2 number, since 2×71036026531² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71036026331) 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, 802960 + ... + 887026.

It is an arithmetic number, because the mean of its divisors is an integer number (6073870966).

Almost surely, 2^71036026531 is an apocalyptic number.

71036026531 is a deficient number, since it is larger than the sum of its proper divisors (1850425061).

71036026531 is an equidigital number, since it uses as much as digits as its factorization.

71036026531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84610 (or 84567 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 34.

Adding to 71036026531 its reverse (13562063017), we get a palindrome (84598089548).

The spelling of 71036026531 in words is "seventy-one billion, thirty-six million, twenty-six thousand, five hundred thirty-one".