71155773311 has 6 divisors (see below), whose sum is σ = 82773042480. Its totient is φ = 60990662796.

The previous prime is 71155773251. The next prime is 71155773323. The reversal of 71155773311 is 11337755117.

It is a happy number.

It is not a de Polignac number, because 71155773311 - 2¹⁰ = 71155772287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71155773391) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 726079271 + ... + 726079368.

It is an arithmetic number, because the mean of its divisors is an integer number (13795507080).

Almost surely, 2^71155773311 is an apocalyptic number.

71155773311 is a deficient number, since it is larger than the sum of its proper divisors (11617269169).

71155773311 is a wasteful number, since it uses less digits than its factorization.

71155773311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1452158653 (or 1452158646 counting only the distinct ones).

The product of its digits is 77175, while the sum is 41.

The spelling of 71155773311 in words is "seventy-one billion, one hundred fifty-five million, seven hundred seventy-three thousand, three hundred eleven".