163061644452 has 24 divisors (see below), whose sum is σ = 434831052096. Its totient is φ = 46589041248.

The previous prime is 163061644451. The next prime is 163061644553. The reversal of 163061644452 is 254446160361.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (163061644451) 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, 970604943 + ... + 970605110.

It is an arithmetic number, because the mean of its divisors is an integer number (18117960504).

Almost surely, 2^163061644452 is an apocalyptic number.

163061644452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

163061644452 is an abundant number, since it is smaller than the sum of its proper divisors (271769407644).

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

163061644452 is a wasteful number, since it uses less digits than its factorization.

163061644452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1941210067 (or 1941210065 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 42.

It can be divided in two parts, 16306164 and 4452, that added together give a triangular number (16310616 = T₅₇₁₁).

The spelling of 163061644452 in words is "one hundred sixty-three billion, sixty-one million, six hundred forty-four thousand, four hundred fifty-two".