11631545145 has 96 divisors (see below), whose sum is σ = 22725391104. Its totient is φ = 5453913600.

The previous prime is 11631545099. The next prime is 11631545161. The reversal of 11631545145 is 54154513611.

11631545145 is a `hidden beast` number, since 1 + 1 + 631 + 5 + 4 + 5 + 14 + 5 = 666.

It is not a de Polignac number, because 11631545145 - 2⁹ = 11631544633 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3166660 + ... + 3170330.

It is an arithmetic number, because the mean of its divisors is an integer number (236722824).

Almost surely, 2^11631545145 is an apocalyptic number.

11631545145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11631545145 is a deficient number, since it is larger than the sum of its proper divisors (11093845959).

11631545145 is a wasteful number, since it uses less digits than its factorization.

11631545145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3903 (or 3900 counting only the distinct ones).

The product of its digits is 36000, while the sum is 36.

The spelling of 11631545145 in words is "eleven billion, six hundred thirty-one million, five hundred forty-five thousand, one hundred forty-five".