11434566681 has 24 divisors (see below), whose sum is σ = 17403940320. Its totient is φ = 7214334336.

The previous prime is 11434566677. The next prime is 11434566701. The reversal of 11434566681 is 18666543411.

It is not a de Polignac number, because 11434566681 - 2² = 11434566677 is a prime.

It is a super-2 number, since 2×11434566681² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11434566641) 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, 132846 + ... + 201288.

It is an arithmetic number, because the mean of its divisors is an integer number (725164180).

Almost surely, 2^11434566681 is an apocalyptic number.

It is an amenable number.

11434566681 is a deficient number, since it is larger than the sum of its proper divisors (5969373639).

11434566681 is a wasteful number, since it uses less digits than its factorization.

11434566681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69445 (or 69442 counting only the distinct ones).

The product of its digits is 414720, while the sum is 45.

The spelling of 11434566681 in words is "eleven billion, four hundred thirty-four million, five hundred sixty-six thousand, six hundred eighty-one".