72265631271 has 4 divisors (see below), whose sum is σ = 96354175032. Its totient is φ = 48177087512.

The previous prime is 72265631267. The next prime is 72265631297. The reversal of 72265631271 is 17213656227.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17213656227 = 3 ⋅5737885409.

It is a cyclic number.

It is not a de Polignac number, because 72265631271 - 2² = 72265631267 is a prime.

It is a super-2 number, since 2×72265631271² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72265631261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12044271876 + ... + 12044271881.

It is an arithmetic number, because the mean of its divisors is an integer number (24088543758).

Almost surely, 2^72265631271 is an apocalyptic number.

72265631271 is a deficient number, since it is larger than the sum of its proper divisors (24088543761).

72265631271 is a wasteful number, since it uses less digits than its factorization.

72265631271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24088543760.

The product of its digits is 211680, while the sum is 42.

The spelling of 72265631271 in words is "seventy-two billion, two hundred sixty-five million, six hundred thirty-one thousand, two hundred seventy-one".