872445544279 has 8 divisors (see below), whose sum is σ = 918937381680. Its totient is φ = 826011072000.

The previous prime is 872445544259. The next prime is 872445544339. The reversal of 872445544279 is 972445544278.

It is a happy number.

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 872445544279 - 2⁵ = 872445544247 is a prime.

It is a super-2 number, since 2×872445544279² (a number of 25 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 (872445544259) 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, 14310052 + ... + 14370889.

It is an arithmetic number, because the mean of its divisors is an integer number (114867172710).

Almost surely, 2^872445544279 is an apocalyptic number.

872445544279 is a deficient number, since it is larger than the sum of its proper divisors (46491837401).

872445544279 is a wasteful number, since it uses less digits than its factorization.

872445544279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28682561.

The product of its digits is 90316800, while the sum is 61.

Subtracting 872445544279 from its reverse (972445544278), we obtain a palindrome (99999999999).

The spelling of 872445544279 in words is "eight hundred seventy-two billion, four hundred forty-five million, five hundred forty-four thousand, two hundred seventy-nine".