163238977803001 has 9 divisors (see below), whose sum is σ = 169062392852301. Its totient is φ = 157609689791904.

The previous prime is 163238977802941. The next prime is 163238977803029. The reversal of 163238977803001 is 100308779832361.

It is a happy number.

The square root of 163238977803001 is 12776501.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 1030734593001 + 162208243210000 = 1015251^2 + 12736100^2 .

It is not a de Polignac number, because 163238977803001 - 2⁹ = 163238977802489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163238977803061) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 370298245 + ... + 370738813.

Almost surely, 2^{163238977803001} is an apocalyptic number.

163238977803001 is the 12776501-st square number.

163238977803001 is the 6388251-st centered octagonal number.

It is an amenable number.

163238977803001 is a deficient number, since it is larger than the sum of its proper divisors (5823415049300).

163238977803001 is an frugal number, since it uses more digits than its factorization.

163238977803001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 881196 (or 440598 counting only the distinct ones).

The product of its (nonzero) digits is 9144576, while the sum is 58.

The spelling of 163238977803001 in words is "one hundred sixty-three trillion, two hundred thirty-eight billion, nine hundred seventy-seven million, eight hundred three thousand, one".