163667383417540 has 24 divisors (see below), whose sum is σ = 343989603722520. Its totient is φ = 65412077453568.

The previous prime is 163667383417511. The next prime is 163667383417579. The reversal of 163667383417540 is 45714383766361.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 18035972746884 + 145631410670656 = 4246878^2 + 12067784^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3429720135 + ... + 3429767854.

It is an arithmetic number, because the mean of its divisors is an integer number (14332900155105).

Almost surely, 2^{163667383417540} is an apocalyptic number.

163667383417540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

163667383417540 is an abundant number, since it is smaller than the sum of its proper divisors (180322220304980).

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

163667383417540 is a wasteful number, since it uses less digits than its factorization.

163667383417540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6859489191 (or 6859489189 counting only the distinct ones).

The product of its (nonzero) digits is 182891520, while the sum is 64.

The spelling of 163667383417540 in words is "one hundred sixty-three trillion, six hundred sixty-seven billion, three hundred eighty-three million, four hundred seventeen thousand, five hundred forty".