10170480961981 has 4 divisors (see below), whose sum is σ = 10170508496764. Its totient is φ = 10170453427200.

The previous prime is 10170480961951. The next prime is 10170480961999. The reversal of 10170480961981 is 18916908407101.

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

It can be written as a sum of positive squares in 2 ways, for example, as 7209982189881 + 2960498772100 = 2685141^2 + 1720610^2 .

It is a cyclic number.

It is not a de Polignac number, because 10170480961981 - 2⁹ = 10170480961469 is a prime.

It is a super-2 number, since 2×10170480961981² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10170480961951) 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, 13205700 + ... + 13954621.

It is an arithmetic number, because the mean of its divisors is an integer number (2542627124191).

Almost surely, 2^{10170480961981} is an apocalyptic number.

It is an amenable number.

10170480961981 is a deficient number, since it is larger than the sum of its proper divisors (27534783).

10170480961981 is an equidigital number, since it uses as much as digits as its factorization.

10170480961981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27534782.

The product of its (nonzero) digits is 870912, while the sum is 55.

The spelling of 10170480961981 in words is "ten trillion, one hundred seventy billion, four hundred eighty million, nine hundred sixty-one thousand, nine hundred eighty-one".