163401847780 has 24 divisors (see below), whose sum is σ = 347487477120. Its totient is φ = 64533387360.

The previous prime is 163401847771. The next prime is 163401847781. The reversal of 163401847780 is 87748104361.

It is not an unprimeable number, because it can be changed into a prime (163401847781) 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, 51707866 + ... + 51711025.

It is an arithmetic number, because the mean of its divisors is an integer number (14478644880).

Almost surely, 2^163401847780 is an apocalyptic number.

163401847780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

163401847780 is an abundant number, since it is smaller than the sum of its proper divisors (184085629340).

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

163401847780 is a wasteful number, since it uses less digits than its factorization.

163401847780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103418979 (or 103418977 counting only the distinct ones).

The product of its (nonzero) digits is 903168, while the sum is 49.

The spelling of 163401847780 in words is "one hundred sixty-three billion, four hundred one million, eight hundred forty-seven thousand, seven hundred eighty".