4547871386381 has 4 divisors (see below), whose sum is σ = 4588118035932. Its totient is φ = 4507624736832.

The previous prime is 4547871386327. The next prime is 4547871386413. The reversal of 4547871386381 is 1836831787454.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2509401323881 + 2038470062500 = 1584109^2 + 1427750^2 .

It is a cyclic number.

It is not a de Polignac number, because 4547871386381 - 2¹⁰ = 4547871385357 is a prime.

It is a super-2 number, since 2×4547871386381² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4547871386281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20123324606 + ... + 20123324831.

It is an arithmetic number, because the mean of its divisors is an integer number (1147029508983).

Almost surely, 2^{4547871386381} is an apocalyptic number.

It is an amenable number.

4547871386381 is a deficient number, since it is larger than the sum of its proper divisors (40246649551).

4547871386381 is a wasteful number, since it uses less digits than its factorization.

4547871386381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40246649550.

The product of its digits is 108380160, while the sum is 65.

The spelling of 4547871386381 in words is "four trillion, five hundred forty-seven billion, eight hundred seventy-one million, three hundred eighty-six thousand, three hundred eighty-one".