11432563681 has 8 divisors (see below), whose sum is σ = 14253585984. Its totient is φ = 8908491120.

The previous prime is 11432563669. The next prime is 11432563729. The reversal of 11432563681 is 18636523411.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11432563681 - 2¹¹ = 11432561633 is a prime.

It is a super-2 number, since 2×11432563681² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11432563621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74237350 + ... + 74237503.

It is an arithmetic number, because the mean of its divisors is an integer number (1781698248).

Almost surely, 2^11432563681 is an apocalyptic number.

11432563681 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11432563681 is a deficient number, since it is larger than the sum of its proper divisors (2821022303).

11432563681 is a wasteful number, since it uses less digits than its factorization.

11432563681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148474871.

The product of its digits is 103680, while the sum is 40.

The spelling of 11432563681 in words is "eleven billion, four hundred thirty-two million, five hundred sixty-three thousand, six hundred eighty-one".