163130712203251 has 4 divisors (see below), whose sum is σ = 175679228526592. Its totient is φ = 150582195879912.

The previous prime is 163130712203243. The next prime is 163130712203321. The reversal of 163130712203251 is 152302217031361.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 163130712203251 - 2³ = 163130712203243 is a prime.

It is a super-2 number, since 2×163130712203251² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 163130712203251.

It is not an unprimeable number, because it can be changed into a prime (163130712203201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6274258161651 + ... + 6274258161676.

It is an arithmetic number, because the mean of its divisors is an integer number (43919807131648).

Almost surely, 2^{163130712203251} is an apocalyptic number.

163130712203251 is a deficient number, since it is larger than the sum of its proper divisors (12548516323341).

163130712203251 is a wasteful number, since it uses less digits than its factorization.

163130712203251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12548516323340.

The product of its (nonzero) digits is 45360, while the sum is 37.

The spelling of 163130712203251 in words is "one hundred sixty-three trillion, one hundred thirty billion, seven hundred twelve million, two hundred three thousand, two hundred fifty-one".