13211572755 has 16 divisors (see below), whose sum is σ = 21142218240. Its totient is φ = 7044938208.

The previous prime is 13211572753. The next prime is 13211572811. The reversal of 13211572755 is 55727511231.

It is a happy number.

It is not a de Polignac number, because 13211572755 - 2¹ = 13211572753 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13211572753) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14934 + ... + 163236.

It is an arithmetic number, because the mean of its divisors is an integer number (1321388640).

Almost surely, 2^13211572755 is an apocalyptic number.

13211572755 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13211572755 is a deficient number, since it is larger than the sum of its proper divisors (7930645485).

13211572755 is a wasteful number, since it uses less digits than its factorization.

13211572755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154250.

The product of its digits is 73500, while the sum is 39.

The spelling of 13211572755 in words is "thirteen billion, two hundred eleven million, five hundred seventy-two thousand, seven hundred fifty-five".