144445887446 has 24 divisors (see below), whose sum is σ = 252060890616. Its totient is φ = 61901068320.

The previous prime is 144445887433. The next prime is 144445887473. The reversal of 144445887446 is 644788544441.

It is a super-2 number, since 2×144445887446² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1648481 + ... + 1733891.

It is an arithmetic number, because the mean of its divisors is an integer number (10502537109).

Almost surely, 2^144445887446 is an apocalyptic number.

144445887446 is a deficient number, since it is larger than the sum of its proper divisors (107615003170).

144445887446 is a wasteful number, since it uses less digits than its factorization.

144445887446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102684 (or 102677 counting only the distinct ones).

The product of its digits is 55050240, while the sum is 59.

The spelling of 144445887446 in words is "one hundred forty-four billion, four hundred forty-five million, eight hundred eighty-seven thousand, four hundred forty-six".