872441328666447 has 64 divisors (see below), whose sum is σ = 1299602441088000. Its totient is φ = 578441379600000.

The previous prime is 872441328666421. The next prime is 872441328666461. The reversal of 872441328666447 is 744666823144278.

It is not a de Polignac number, because 872441328666447 - 2²² = 872441324472143 is a prime.

It is a super-2 number, since 2×872441328666447² (a number of 31 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (872441328662447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 20792689254 + ... + 20792731212.

It is an arithmetic number, because the mean of its divisors is an integer number (20306288142000).

Almost surely, 2^{872441328666447} is an apocalyptic number.

872441328666447 is a deficient number, since it is larger than the sum of its proper divisors (427161112421553).

872441328666447 is a wasteful number, since it uses less digits than its factorization.

872441328666447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46749 (or 46743 counting only the distinct ones).

The product of its digits is 2080899072, while the sum is 72.

The spelling of 872441328666447 in words is "eight hundred seventy-two trillion, four hundred forty-one billion, three hundred twenty-eight million, six hundred sixty-six thousand, four hundred forty-seven".