11156047564489 has 27 divisors (see below), whose sum is σ = 11830979829357. Its totient is φ = 10518084747288.

The previous prime is 11156047564469. The next prime is 11156047564499. The reversal of 11156047564489 is 98446574065111.

It is a happy number.

The square root of 11156047564489 is 3340067.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 11156047564489 - 2¹⁵ = 11156047531721 is a prime.

It is a super-3 number, since 3×11156047564489³ (a number of 40 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11156047564469) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 23290286952 + ... + 23290287430.

Almost surely, 2^{11156047564489} is an apocalyptic number.

11156047564489 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

11156047564489 is the 3340067-th square number.

11156047564489 is the 1670034-th centered octagonal number.

It is an amenable number.

11156047564489 is a deficient number, since it is larger than the sum of its proper divisors (674932264868).

11156047564489 is an frugal number, since it uses more digits than its factorization.

11156047564489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1730 (or 865 counting only the distinct ones).

The product of its (nonzero) digits is 29030400, while the sum is 61.

The spelling of 11156047564489 in words is "eleven trillion, one hundred fifty-six billion, forty-seven million, five hundred sixty-four thousand, four hundred eighty-nine".