11019452545 has 4 divisors (see below), whose sum is σ = 13223343060. Its totient is φ = 8815562032.

The previous prime is 11019452533. The next prime is 11019452569. The reversal of 11019452545 is 54525491011.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2776446864 + 8243005681 = 52692^2 + 90791^2 .

It is a cyclic number.

It is not a de Polignac number, because 11019452545 - 2⁹ = 11019452033 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1101945250 + ... + 1101945259.

It is an arithmetic number, because the mean of its divisors is an integer number (3305835765).

Almost surely, 2^11019452545 is an apocalyptic number.

It is an amenable number.

11019452545 is a deficient number, since it is larger than the sum of its proper divisors (2203890515).

11019452545 is an equidigital number, since it uses as much as digits as its factorization.

11019452545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2203890514.

The product of its (nonzero) digits is 36000, while the sum is 37.

The spelling of 11019452545 in words is "eleven billion, nineteen million, four hundred fifty-two thousand, five hundred forty-five".