11456534881 has 8 divisors (see below), whose sum is σ = 12544502400. Its totient is φ = 10376311440.

The previous prime is 11456534857. The next prime is 11456534893. The reversal of 11456534881 is 18843565411.

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

It is not a de Polignac number, because 11456534881 - 2¹⁷ = 11456403809 is a prime.

It is a super-2 number, since 2×11456534881² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11456534081) 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, 1932921 + ... + 1938838.

It is an arithmetic number, because the mean of its divisors is an integer number (1568062800).

Almost surely, 2^11456534881 is an apocalyptic number.

11456534881 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11456534881 is a deficient number, since it is larger than the sum of its proper divisors (1087967519).

11456534881 is a wasteful number, since it uses less digits than its factorization.

11456534881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3872039.

The product of its digits is 460800, while the sum is 46.

The spelling of 11456534881 in words is "eleven billion, four hundred fifty-six million, five hundred thirty-four thousand, eight hundred eighty-one".