872128043547 has 12 divisors (see below), whose sum is σ = 1215593721384. Its totient is φ = 556139620960.

The previous prime is 872128043533. The next prime is 872128043551. The reversal of 872128043547 is 745340821278.

It is a happy number.

It is not a de Polignac number, because 872128043547 - 2⁴ = 872128043531 is a prime.

It is a super-2 number, since 2×872128043547² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 872128043547.

It is not an unprimeable number, because it can be changed into a prime (872128003547) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 274770954 + ... + 274774127.

It is an arithmetic number, because the mean of its divisors is an integer number (101299476782).

Almost surely, 2^872128043547 is an apocalyptic number.

872128043547 is a deficient number, since it is larger than the sum of its proper divisors (343465677837).

872128043547 is a wasteful number, since it uses less digits than its factorization.

872128043547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549545130 (or 549545107 counting only the distinct ones).

The product of its (nonzero) digits is 3010560, while the sum is 51.

The spelling of 872128043547 in words is "eight hundred seventy-two billion, one hundred twenty-eight million, forty-three thousand, five hundred forty-seven".