163540441215265 has 8 divisors (see below), whose sum is σ = 197178617276928. Its totient is φ = 130212294426480.

The previous prime is 163540441215259. The next prime is 163540441215293. The reversal of 163540441215265 is 562512144045361.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 163540441215265 - 2³ = 163540441215257 is a prime.

It is a super-2 number, since 2×163540441215265² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77507317057 + ... + 77507319166.

It is an arithmetic number, because the mean of its divisors is an integer number (24647327159616).

Almost surely, 2^{163540441215265} is an apocalyptic number.

It is an amenable number.

163540441215265 is a deficient number, since it is larger than the sum of its proper divisors (33638176061663).

163540441215265 is a wasteful number, since it uses less digits than its factorization.

163540441215265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155014636439.

The product of its (nonzero) digits is 3456000, while the sum is 49.

The spelling of 163540441215265 in words is "one hundred sixty-three trillion, five hundred forty billion, four hundred forty-one million, two hundred fifteen thousand, two hundred sixty-five".