163344635025 has 96 divisors (see below), whose sum is σ = 327512371200. Its totient is φ = 70746912000.

The previous prime is 163344634991. The next prime is 163344635107. The reversal of 163344635025 is 520536443361.

It is not a de Polignac number, because 163344635025 - 2¹⁰ = 163344634001 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 86826 + ... + 578124.

It is an arithmetic number, because the mean of its divisors is an integer number (3411587200).

Almost surely, 2^163344635025 is an apocalyptic number.

163344635025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

163344635025 is an abundant number, since it is smaller than the sum of its proper divisors (164167736175).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

163344635025 is a wasteful number, since it uses less digits than its factorization.

163344635025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491367 (or 491362 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 42.

The spelling of 163344635025 in words is "one hundred sixty-three billion, three hundred forty-four million, six hundred thirty-five thousand, twenty-five".