72116103671 has 4 divisors (see below), whose sum is σ = 74065187592. Its totient is φ = 70167019752.

The previous prime is 72116103667. The next prime is 72116103679. The reversal of 72116103671 is 17630161127.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17630161127 = 107 ⋅164767861.

It is a cyclic number.

It is not a de Polignac number, because 72116103671 - 2² = 72116103667 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 (72116103679) 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, 974541905 + ... + 974541978.

It is an arithmetic number, because the mean of its divisors is an integer number (18516296898).

Almost surely, 2^72116103671 is an apocalyptic number.

72116103671 is a deficient number, since it is larger than the sum of its proper divisors (1949083921).

72116103671 is a wasteful number, since it uses less digits than its factorization.

72116103671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1949083920.

The product of its (nonzero) digits is 10584, while the sum is 35.

Adding to 72116103671 its reverse (17630161127), we get a palindrome (89746264798).

The spelling of 72116103671 in words is "seventy-two billion, one hundred sixteen million, one hundred three thousand, six hundred seventy-one".