72264042231 has 4 divisors (see below), whose sum is σ = 96352056312. Its totient is φ = 48176028152.

The previous prime is 72264042209. The next prime is 72264042233. The reversal of 72264042231 is 13224046227.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 72264042231 - 2⁹ = 72264041719 is a prime.

It is a super-2 number, since 2×72264042231² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 72264042192 and 72264042201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72264042233) 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, 12044007036 + ... + 12044007041.

It is an arithmetic number, because the mean of its divisors is an integer number (24088014078).

Almost surely, 2^72264042231 is an apocalyptic number.

72264042231 is a deficient number, since it is larger than the sum of its proper divisors (24088014081).

72264042231 is a wasteful number, since it uses less digits than its factorization.

72264042231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24088014080.

The product of its (nonzero) digits is 32256, while the sum is 33.

Adding to 72264042231 its reverse (13224046227), we get a palindrome (85488088458).

The spelling of 72264042231 in words is "seventy-two billion, two hundred sixty-four million, forty-two thousand, two hundred thirty-one".