3871457656243 has 16 divisors (see below), whose sum is σ = 3987439142400. Its totient is φ = 3757167704160.

The previous prime is 3871457656217. The next prime is 3871457656247. The reversal of 3871457656243 is 3426567541783.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3871457656243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3871457656247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38034205 + ... + 38135857.

It is an arithmetic number, because the mean of its divisors is an integer number (249214946400).

Almost surely, 2^{3871457656243} is an apocalyptic number.

3871457656243 is a deficient number, since it is larger than the sum of its proper divisors (115981486157).

3871457656243 is a wasteful number, since it uses less digits than its factorization.

3871457656243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109962.

The product of its digits is 101606400, while the sum is 61.

The spelling of 3871457656243 in words is "three trillion, eight hundred seventy-one billion, four hundred fifty-seven million, six hundred fifty-six thousand, two hundred forty-three".