13857441544 has 8 divisors (see below), whose sum is σ = 25982702910. Its totient is φ = 6928720768.

The previous prime is 13857441517. The next prime is 13857441547. The reversal of 13857441544 is 44514475831.

It can be written as a sum of positive squares in only one way, i.e., 7253928900 + 6603512644 = 85170^2 + 81262^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×13857441544² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13857441494 and 13857441503.

It is not an unprimeable number, because it can be changed into a prime (13857441547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 866090089 + ... + 866090104.

Almost surely, 2^13857441544 is an apocalyptic number.

It is an amenable number.

13857441544 is a deficient number, since it is larger than the sum of its proper divisors (12125261366).

13857441544 is a wasteful number, since it uses less digits than its factorization.

13857441544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1732180199 (or 1732180195 counting only the distinct ones).

The product of its digits is 1075200, while the sum is 46.

The spelling of 13857441544 in words is "thirteen billion, eight hundred fifty-seven million, four hundred forty-one thousand, five hundred forty-four".