11271011553 has 6 divisors (see below), whose sum is σ = 16280350034. Its totient is φ = 7514007696.

The previous prime is 11271011537. The next prime is 11271011567. The reversal of 11271011553 is 35511017211.

11271011553 is a `hidden beast` number, since 1 + 1 + 2 + 7 + 101 + 1 + 553 = 666.

It can be written as a sum of positive squares in only one way, i.e., 6945055569 + 4325955984 = 83337^2 + 65772^2 .

It is not a de Polignac number, because 11271011553 - 2⁴ = 11271011537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11271011533) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 626167300 + ... + 626167317.

Almost surely, 2^11271011553 is an apocalyptic number.

It is an amenable number.

11271011553 is a deficient number, since it is larger than the sum of its proper divisors (5009338481).

11271011553 is a wasteful number, since it uses less digits than its factorization.

11271011553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1252334623 (or 1252334620 counting only the distinct ones).

The product of its (nonzero) digits is 1050, while the sum is 27.

Adding to 11271011553 its reverse (35511017211), we get a palindrome (46782028764).

The spelling of 11271011553 in words is "eleven billion, two hundred seventy-one million, eleven thousand, five hundred fifty-three".