163344635053 has 4 divisors (see below), whose sum is σ = 163345932288. Its totient is φ = 163343337820.

The previous prime is 163344634991. The next prime is 163344635107. The reversal of 163344635053 is 350536443361.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 350536443361 = 13 ⋅26964341797.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-163344635053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163344635353) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 436651 + ... + 719272.

It is an arithmetic number, because the mean of its divisors is an integer number (40836483072).

Almost surely, 2^163344635053 is an apocalyptic number.

It is an amenable number.

163344635053 is a deficient number, since it is larger than the sum of its proper divisors (1297235).

163344635053 is a wasteful number, since it uses less digits than its factorization.

163344635053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1297234.

The product of its (nonzero) digits is 1166400, while the sum is 43.

The spelling of 163344635053 in words is "one hundred sixty-three billion, three hundred forty-four million, six hundred thirty-five thousand, fifty-three".