11640450545 has 16 divisors (see below), whose sum is σ = 14796069120. Its totient is φ = 8761108224.

The previous prime is 11640450517. The next prime is 11640450551. The reversal of 11640450545 is 54505404611.

It is a cyclic number.

It is not a de Polignac number, because 11640450545 - 2¹⁰ = 11640449521 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 200264 + ... + 251766.

It is an arithmetic number, because the mean of its divisors is an integer number (924754320).

Almost surely, 2^11640450545 is an apocalyptic number.

It is an amenable number.

11640450545 is a deficient number, since it is larger than the sum of its proper divisors (3155618575).

11640450545 is a wasteful number, since it uses less digits than its factorization.

11640450545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54184.

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

The spelling of 11640450545 in words is "eleven billion, six hundred forty million, four hundred fifty thousand, five hundred forty-five".