216162065040465 has 32 divisors (see below), whose sum is σ = 357063018909696. Its totient is φ = 111552841471680.

The previous prime is 216162065040463. The next prime is 216162065040487. The reversal of 216162065040465 is 564040560261612.

It is a happy number.

It is not a de Polignac number, because 216162065040465 - 2¹ = 216162065040463 is a prime.

It is not an unprimeable number, because it can be changed into a prime (216162065040463) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27035739 + ... + 34106528.

It is an arithmetic number, because the mean of its divisors is an integer number (11158219340928).

Almost surely, 2^{216162065040465} is an apocalyptic number.

It is an amenable number.

216162065040465 is a deficient number, since it is larger than the sum of its proper divisors (140900953869231).

216162065040465 is a wasteful number, since it uses less digits than its factorization.

216162065040465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61149909.

The product of its (nonzero) digits is 2073600, while the sum is 48.

The spelling of 216162065040465 in words is "two hundred sixteen trillion, one hundred sixty-two billion, sixty-five million, forty thousand, four hundred sixty-five".