11435421545 has 16 divisors (see below), whose sum is σ = 13776133968. Its totient is φ = 9112631040.

The previous prime is 11435421533. The next prime is 11435421551. The reversal of 11435421545 is 54512453411.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 607770409 + 10827651136 = 24653^2 + 104056^2 .

It is not a de Polignac number, because 11435421545 - 2¹⁸ = 11435159401 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3734315 + ... + 3737375.

It is an arithmetic number, because the mean of its divisors is an integer number (861008373).

Almost surely, 2^11435421545 is an apocalyptic number.

It is an amenable number.

11435421545 is a deficient number, since it is larger than the sum of its proper divisors (2340712423).

11435421545 is a wasteful number, since it uses less digits than its factorization.

11435421545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5740.

The product of its digits is 48000, while the sum is 35.

Adding to 11435421545 its reverse (54512453411), we get a palindrome (65947874956).

The spelling of 11435421545 in words is "eleven billion, four hundred thirty-five million, four hundred twenty-one thousand, five hundred forty-five".