163440162443525 has 12 divisors (see below), whose sum is σ = 221089965196704. Its totient is φ = 118865572686000.

The previous prime is 163440162443501. The next prime is 163440162443563. The reversal of 163440162443525 is 525344261044361.

It is not a de Polignac number, because 163440162443525 - 2⁶ = 163440162443461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 297163931441 + ... + 297163931990.

It is an arithmetic number, because the mean of its divisors is an integer number (18424163766392).

Almost surely, 2^{163440162443525} is an apocalyptic number.

It is an amenable number.

163440162443525 is a deficient number, since it is larger than the sum of its proper divisors (57649802753179).

163440162443525 is a wasteful number, since it uses less digits than its factorization.

163440162443525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 594327863452 (or 594327863447 counting only the distinct ones).

The product of its (nonzero) digits is 8294400, while the sum is 50.

The spelling of 163440162443525 in words is "one hundred sixty-three trillion, four hundred forty billion, one hundred sixty-two million, four hundred forty-three thousand, five hundred twenty-five".