11945965535 has 48 divisors (see below), whose sum is σ = 17679785760. Its totient is φ = 7699507200.

The previous prime is 11945965519. The next prime is 11945965541. The reversal of 11945965535 is 53556954911.

It is not a de Polignac number, because 11945965535 - 2⁴ = 11945965519 is a prime.

It is a congruent 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 47 ways as a sum of consecutive naturals, for example, 4376051 + ... + 4378779.

It is an arithmetic number, because the mean of its divisors is an integer number (368328870).

Almost surely, 2^11945965535 is an apocalyptic number.

11945965535 is a deficient number, since it is larger than the sum of its proper divisors (5733820225).

11945965535 is a wasteful number, since it uses less digits than its factorization.

11945965535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3816 (or 3809 counting only the distinct ones).

The product of its digits is 3645000, while the sum is 53.

The spelling of 11945965535 in words is "eleven billion, nine hundred forty-five million, nine hundred sixty-five thousand, five hundred thirty-five".