27216005265 has 80 divisors (see below), whose sum is σ = 50024304000. Its totient is φ = 14148546048.

The previous prime is 27216005237. The next prime is 27216005269. The reversal of 27216005265 is 56250061272.

27216005265 is a `hidden beast` number, since 2 + 7 + 21 + 600 + 5 + 26 + 5 = 666.

It is not a de Polignac number, because 27216005265 - 2¹³ = 27215997073 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27216005269) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 10430281 + ... + 10432889.

It is an arithmetic number, because the mean of its divisors is an integer number (625303800).

Almost surely, 2^27216005265 is an apocalyptic number.

It is an amenable number.

27216005265 is a deficient number, since it is larger than the sum of its proper divisors (22808298735).

27216005265 is a wasteful number, since it uses less digits than its factorization.

27216005265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3268 (or 3259 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The spelling of 27216005265 in words is "twenty-seven billion, two hundred sixteen million, five thousand, two hundred sixty-five".