71276511765 has 16 divisors (see below), whose sum is σ = 117721207296. Its totient is φ = 36787876800.

The previous prime is 71276511763. The next prime is 71276511781. The reversal of 71276511765 is 56711567217.

It is not a de Polignac number, because 71276511765 - 2¹ = 71276511763 is a prime.

It is a super-2 number, since 2×71276511765² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71276511763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76640946 + ... + 76641875.

It is an arithmetic number, because the mean of its divisors is an integer number (7357575456).

Almost surely, 2^71276511765 is an apocalyptic number.

It is an amenable number.

71276511765 is a deficient number, since it is larger than the sum of its proper divisors (46444695531).

71276511765 is a wasteful number, since it uses less digits than its factorization.

71276511765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153282860.

The product of its digits is 617400, while the sum is 48.

The spelling of 71276511765 in words is "seventy-one billion, two hundred seventy-six million, five hundred eleven thousand, seven hundred sixty-five".