72722111071 has 4 divisors (see below), whose sum is σ = 72823255200. Its totient is φ = 72620966944.

The previous prime is 72722111041. The next prime is 72722111101. The reversal of 72722111071 is 17011122727.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17011122727 = 51361 ⋅331207.

It is an interprime number because it is at equal distance from previous prime (72722111041) and next prime (72722111101).

It is a cyclic number.

It is not a de Polignac number, because 72722111071 - 2²⁵ = 72688556639 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 (72722111041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50570986 + ... + 50572423.

It is an arithmetic number, because the mean of its divisors is an integer number (18205813800).

Almost surely, 2^72722111071 is an apocalyptic number.

72722111071 is a deficient number, since it is larger than the sum of its proper divisors (101144129).

72722111071 is a wasteful number, since it uses less digits than its factorization.

72722111071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101144128.

The product of its (nonzero) digits is 2744, while the sum is 31.

Adding to 72722111071 its reverse (17011122727), we get a palindrome (89733233798).

The spelling of 72722111071 in words is "seventy-two billion, seven hundred twenty-two million, one hundred eleven thousand, seventy-one".