72191966919127 has 8 divisors (see below), whose sum is σ = 78754934632320. Its totient is φ = 65629009477560.

The previous prime is 72191966919031. The next prime is 72191966919133.

72191966919127 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 72191966919127 - 2⁷ = 72191966918999 is a prime.

It is a super-2 number, since 2×72191966919127² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72191966919197) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24931348 + ... + 27675910.

It is an arithmetic number, because the mean of its divisors is an integer number (9844366829040).

Almost surely, 2^{72191966919127} is an apocalyptic number.

72191966919127 is a deficient number, since it is larger than the sum of its proper divisors (6562967713193).

72191966919127 is a wasteful number, since it uses less digits than its factorization.

72191966919127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5135813.

The product of its digits is 46294416, while the sum is 70.

The spelling of 72191966919127 in words is "seventy-two trillion, one hundred ninety-one billion, nine hundred sixty-six million, nine hundred nineteen thousand, one hundred twenty-seven".