13857441543 has 24 divisors (see below), whose sum is σ = 22143528576. Its totient is φ = 8280157200.

The previous prime is 13857441517. The next prime is 13857441547. The reversal of 13857441543 is 34514475831.

13857441543 is a `hidden beast` number, since 1 + 38 + 5 + 74 + 4 + 1 + 543 = 666.

It is not a de Polignac number, because 13857441543 - 2¹³ = 13857433351 is a prime.

It is a super-2 number, since 2×13857441543² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

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

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 978705 + ... + 992762.

It is an arithmetic number, because the mean of its divisors is an integer number (922647024).

Almost surely, 2^13857441543 is an apocalyptic number.

13857441543 is a deficient number, since it is larger than the sum of its proper divisors (8286087033).

13857441543 is a wasteful number, since it uses less digits than its factorization.

13857441543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1971555 (or 1971552 counting only the distinct ones).

The product of its digits is 806400, while the sum is 45.

The spelling of 13857441543 in words is "thirteen billion, eight hundred fifty-seven million, four hundred forty-one thousand, five hundred forty-three".