11154330553 has 2 divisors, whose sum is σ = 11154330554. Its totient is φ = 11154330552.

The previous prime is 11154330433. The next prime is 11154330557. The reversal of 11154330553 is 35503345111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10610648064 + 543682489 = 103008^2 + 23317^2 .

It is a cyclic number.

It is not a de Polignac number, because 11154330553 - 2²¹ = 11152233401 is a prime.

It is not a weakly prime, because it can be changed into another prime (11154330557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5577165276 + 5577165277.

It is an arithmetic number, because the mean of its divisors is an integer number (5577165277).

Almost surely, 2^11154330553 is an apocalyptic number.

It is an amenable number.

11154330553 is a deficient number, since it is larger than the sum of its proper divisors (1).

11154330553 is an equidigital number, since it uses as much as digits as its factorization.

11154330553 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13500, while the sum is 31.

Adding to 11154330553 its reverse (35503345111), we get a palindrome (46657675664).

The spelling of 11154330553 in words is "eleven billion, one hundred fifty-four million, three hundred thirty thousand, five hundred fifty-three".