11711842681 has 32 divisors (see below), whose sum is σ = 14861548800. Its totient is φ = 8964172800.

The previous prime is 11711842663. The next prime is 11711842699. The reversal of 11711842681 is 18624811711.

It is an interprime number because it is at equal distance from previous prime (11711842663) and next prime (11711842699).

It is not a de Polignac number, because 11711842681 - 2¹⁹ = 11711318393 is a prime.

It is a super-2 number, since 2×11711842681² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11711842601) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4925965 + ... + 4928341.

It is an arithmetic number, because the mean of its divisors is an integer number (464423400).

Almost surely, 2^11711842681 is an apocalyptic number.

11711842681 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11711842681 is a deficient number, since it is larger than the sum of its proper divisors (3149706119).

11711842681 is a wasteful number, since it uses less digits than its factorization.

11711842681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3505.

The product of its digits is 21504, while the sum is 40.

The spelling of 11711842681 in words is "eleven billion, seven hundred eleven million, eight hundred forty-two thousand, six hundred eighty-one".