11507640545 has 16 divisors (see below), whose sum is σ = 14273461440. Its totient is φ = 8901700800.

The previous prime is 11507640517. The next prime is 11507640553. The reversal of 11507640545 is 54504670511.

11507640545 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11507640545 - 2³⁰ = 10433898721 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11507640499 and 11507640508.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 301751 + ... + 337740.

It is an arithmetic number, because the mean of its divisors is an integer number (892091340).

Almost surely, 2^11507640545 is an apocalyptic number.

It is an amenable number.

11507640545 is a deficient number, since it is larger than the sum of its proper divisors (2765820895).

11507640545 is an equidigital number, since it uses as much as digits as its factorization.

11507640545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639616.

The product of its (nonzero) digits is 84000, while the sum is 38.

The spelling of 11507640545 in words is "eleven billion, five hundred seven million, six hundred forty thousand, five hundred forty-five".