163552532651 has 4 divisors (see below), whose sum is σ = 163780005600. Its totient is φ = 163325059704.

The previous prime is 163552532639. The next prime is 163552532699. The reversal of 163552532651 is 156235255361.

163552532651 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 156235255361 = 67 ⋅2331869483.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-163552532651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163552532951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113735396 + ... + 113736833.

It is an arithmetic number, because the mean of its divisors is an integer number (40945001400).

Almost surely, 2^163552532651 is an apocalyptic number.

163552532651 is a deficient number, since it is larger than the sum of its proper divisors (227472949).

163552532651 is an equidigital number, since it uses as much as digits as its factorization.

163552532651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227472948.

The product of its digits is 810000, while the sum is 44.

The spelling of 163552532651 in words is "one hundred sixty-three billion, five hundred fifty-two million, five hundred thirty-two thousand, six hundred fifty-one".