163887310540801 has 32 divisors (see below), whose sum is σ = 173215530829440. Its totient is φ = 154897538374656.

The previous prime is 163887310540783. The next prime is 163887310540823. The reversal of 163887310540801 is 108045013788361.

It is a cyclic number.

It is not a de Polignac number, because 163887310540801 - 2⁷ = 163887310540673 is a prime.

It is a super-3 number, since 3×163887310540801³ (a number of 44 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163887310540601) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 53700130 + ... + 56669908.

It is an arithmetic number, because the mean of its divisors is an integer number (5412985338420).

Almost surely, 2^{163887310540801} is an apocalyptic number.

It is an amenable number.

163887310540801 is a deficient number, since it is larger than the sum of its proper divisors (9328220288639).

163887310540801 is a wasteful number, since it uses less digits than its factorization.

163887310540801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2970193.

The product of its (nonzero) digits is 3870720, while the sum is 55.

The spelling of 163887310540801 in words is "one hundred sixty-three trillion, eight hundred eighty-seven billion, three hundred ten million, five hundred forty thousand, eight hundred one".