201616797465 has 96 divisors (see below), whose sum is σ = 379155119616. Its totient is φ = 102673059840.

The previous prime is 201616797463. The next prime is 201616797479. The reversal of 201616797465 is 564797616102.

201616797465 is a `hidden beast` number, since 2 + 0 + 16 + 167 + 9 + 7 + 465 = 666.

It is not a de Polignac number, because 201616797465 - 2¹ = 201616797463 is a prime.

It is not an unprimeable number, because it can be changed into a prime (201616797463) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2298249 + ... + 2384361.

It is an arithmetic number, because the mean of its divisors is an integer number (3949532496).

Almost surely, 2^201616797465 is an apocalyptic number.

It is an amenable number.

201616797465 is a deficient number, since it is larger than the sum of its proper divisors (177538322151).

201616797465 is an equidigital number, since it uses as much as digits as its factorization.

201616797465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86221 (or 86209 counting only the distinct ones).

The product of its (nonzero) digits is 3810240, while the sum is 54.

The spelling of 201616797465 in words is "two hundred one billion, six hundred sixteen million, seven hundred ninety-seven thousand, four hundred sixty-five".