11212513545 has 16 divisors (see below), whose sum is σ = 17943449472. Its totient is φ = 5978864640.

The previous prime is 11212513519. The next prime is 11212513561. The reversal of 11212513545 is 54531521211.

It is not a de Polignac number, because 11212513545 - 2¹⁴ = 11212497161 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12924 + ... + 150306.

It is an arithmetic number, because the mean of its divisors is an integer number (1121465592).

Almost surely, 2^11212513545 is an apocalyptic number.

11212513545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11212513545 is a deficient number, since it is larger than the sum of its proper divisors (6730935927).

11212513545 is a wasteful number, since it uses less digits than its factorization.

11212513545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142832.

The product of its digits is 6000, while the sum is 30.

The spelling of 11212513545 in words is "eleven billion, two hundred twelve million, five hundred thirteen thousand, five hundred forty-five".