11155354506 has 20 divisors (see below), whose sum is σ = 24996257682. Its totient is φ = 3718451448.

The previous prime is 11155354493. The next prime is 11155354517. The reversal of 11155354506 is 60545355111.

11155354506 is a `hidden beast` number, since 1 + 1 + 1 + 553 + 54 + 50 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 11154528225 + 826281 = 105615^2 + 909^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 34429945 + ... + 34430268.

Almost surely, 2^11155354506 is an apocalyptic number.

11155354506 is an abundant number, since it is smaller than the sum of its proper divisors (13840903176).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11155354506 is an equidigital number, since it uses as much as digits as its factorization.

11155354506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68860227 (or 68860218 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 36.

The spelling of 11155354506 in words is "eleven billion, one hundred fifty-five million, three hundred fifty-four thousand, five hundred six".