163540510653 has 8 divisors (see below), whose sum is σ = 234827399968. Its totient is φ = 100640314224.

The previous prime is 163540510631. The next prime is 163540510657. The reversal of 163540510653 is 356015045361.

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

It is not a de Polignac number, because 163540510653 - 2⁵ = 163540510621 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 4193346427 = 163540510653 / (1 + 6 + 3 + 5 + 4 + 0 + 5 + 1 + 0 + 6 + 5 + 3).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163540510657) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2096673175 + ... + 2096673252.

It is an arithmetic number, because the mean of its divisors is an integer number (29353424996).

Almost surely, 2^163540510653 is an apocalyptic number.

163540510653 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

163540510653 is a deficient number, since it is larger than the sum of its proper divisors (71286889315).

163540510653 is a wasteful number, since it uses less digits than its factorization.

163540510653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4193346443.

The product of its (nonzero) digits is 162000, while the sum is 39.

The spelling of 163540510653 in words is "one hundred sixty-three billion, five hundred forty million, five hundred ten thousand, six hundred fifty-three".