71122271765 has 32 divisors (see below), whose sum is σ = 91070853120. Its totient is φ = 53135308800.

The previous prime is 71122271729. The next prime is 71122271771. The reversal of 71122271765 is 56717222117.

It is a de Polignac number, because none of the positive numbers 2^k-71122271765 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6634760 + ... + 6645470.

It is an arithmetic number, because the mean of its divisors is an integer number (2845964160).

Almost surely, 2^71122271765 is an apocalyptic number.

It is an amenable number.

71122271765 is a deficient number, since it is larger than the sum of its proper divisors (19948581355).

71122271765 is a wasteful number, since it uses less digits than its factorization.

71122271765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11333.

The product of its digits is 82320, while the sum is 41.

The spelling of 71122271765 in words is "seventy-one billion, one hundred twenty-two million, two hundred seventy-one thousand, seven hundred sixty-five".