163548123087978 has 12 divisors (see below), whose sum is σ = 354354266690658. Its totient is φ = 54516041029320.

The previous prime is 163548123087919. The next prime is 163548123087989. The reversal of 163548123087978 is 879780321845361.

163548123087978 is a `hidden beast` number, since 1 + 6 + 3 + 5 + 481 + 2 + 3 + 0 + 8 + 79 + 78 = 666.

163548123087978 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 111525702088329 + 52022420999649 = 10560573^2 + 7212657^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4543003419093 + ... + 4543003419128.

It is a 1-persistent number, because it is pandigital, but 2⋅163548123087978 = 327096246175956 is not.

Almost surely, 2^{163548123087978} is an apocalyptic number.

163548123087978 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

163548123087978 is an abundant number, since it is smaller than the sum of its proper divisors (190806143602680).

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

163548123087978 is a wasteful number, since it uses less digits than its factorization.

163548123087978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9086006838229 (or 9086006838226 counting only the distinct ones).

The product of its (nonzero) digits is 487710720, while the sum is 72.

The spelling of 163548123087978 in words is "one hundred sixty-three trillion, five hundred forty-eight billion, one hundred twenty-three million, eighty-seven thousand, nine hundred seventy-eight".