881618813444 has 12 divisors (see below), whose sum is σ = 1545782894544. Its totient is φ = 439966557864.

The previous prime is 881618813437. The next prime is 881618813461. The reversal of 881618813444 is 444318816188.

It is a super-2 number, since 2×881618813444² (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 881618813444.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 210709862 + ... + 210714045.

It is an arithmetic number, because the mean of its divisors is an integer number (128815241212).

Almost surely, 2^881618813444 is an apocalyptic number.

It is an amenable number.

881618813444 is a deficient number, since it is larger than the sum of its proper divisors (664164081100).

881618813444 is a wasteful number, since it uses less digits than its factorization.

881618813444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421424434 (or 421424432 counting only the distinct ones).

The product of its digits is 4718592, while the sum is 56.

The spelling of 881618813444 in words is "eight hundred eighty-one billion, six hundred eighteen million, eight hundred thirteen thousand, four hundred forty-four".