1447432142881 has 12 divisors (see below), whose sum is σ = 1528457297664. Its totient is φ = 1370501969400.

The previous prime is 1447432142833. The next prime is 1447432142909. The reversal of 1447432142881 is 1882412347441.

It is not a de Polignac number, because 1447432142881 - 2²¹ = 1447430045729 is a prime.

It is a super-2 number, since 2×1447432142881² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1447432145881) 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, 433905 + ... + 1755886.

It is an arithmetic number, because the mean of its divisors is an integer number (127371441472).

Almost surely, 2^{1447432142881} is an apocalyptic number.

It is an amenable number.

1447432142881 is a deficient number, since it is larger than the sum of its proper divisors (81025154783).

1447432142881 is a wasteful number, since it uses less digits than its factorization.

1447432142881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2191660 (or 2191641 counting only the distinct ones).

The product of its digits is 1376256, while the sum is 49.

The spelling of 1447432142881 in words is "one trillion, four hundred forty-seven billion, four hundred thirty-two million, one hundred forty-two thousand, eight hundred eighty-one".