71265432511 has 8 divisors (see below), whose sum is σ = 87711301664. Its totient is φ = 56385836640.

The previous prime is 71265432493. The next prime is 71265432583. The reversal of 71265432511 is 11523456217.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 71265432511 - 2⁵ = 71265432479 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71265432011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 391568220 + ... + 391568401.

It is an arithmetic number, because the mean of its divisors is an integer number (10963912708).

Almost surely, 2^71265432511 is an apocalyptic number.

71265432511 is a deficient number, since it is larger than the sum of its proper divisors (16445869153).

71265432511 is a wasteful number, since it uses less digits than its factorization.

71265432511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 783136641.

The product of its digits is 50400, while the sum is 37.

Adding to 71265432511 its reverse (11523456217), we get a palindrome (82788888728).

The spelling of 71265432511 in words is "seventy-one billion, two hundred sixty-five million, four hundred thirty-two thousand, five hundred eleven".