4087831135681 has 4 divisors (see below), whose sum is σ = 4087893042112. Its totient is φ = 4087769229252.

The previous prime is 4087831135669. The next prime is 4087831135693. The reversal of 4087831135681 is 1865311387804.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (4087831135669) and next prime (4087831135693).

It is a cyclic number.

It is not a de Polignac number, because 4087831135681 - 2¹⁵ = 4087831102913 is a prime.

It is a super-2 number, since 2×4087831135681² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4087831135621) 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, 30854061 + ... + 30986266.

It is an arithmetic number, because the mean of its divisors is an integer number (1021973260528).

Almost surely, 2^{4087831135681} is an apocalyptic number.

It is an amenable number.

4087831135681 is a deficient number, since it is larger than the sum of its proper divisors (61906431).

4087831135681 is an equidigital number, since it uses as much as digits as its factorization.

4087831135681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61906430.

The product of its (nonzero) digits is 3870720, while the sum is 55.

The spelling of 4087831135681 in words is "four trillion, eighty-seven billion, eight hundred thirty-one million, one hundred thirty-five thousand, six hundred eighty-one".