10171215381 has 16 divisors (see below), whose sum is σ = 13943446400. Its totient is φ = 6590299968.

The previous prime is 10171215377. The next prime is 10171215389. The reversal of 10171215381 is 18351217101.

It is not a de Polignac number, because 10171215381 - 2² = 10171215377 is a prime.

It is a super-2 number, since 2×10171215381² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10171215389) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52155 + ... + 151863.

It is an arithmetic number, because the mean of its divisors is an integer number (871465400).

Almost surely, 2^10171215381 is an apocalyptic number.

It is an amenable number.

10171215381 is a deficient number, since it is larger than the sum of its proper divisors (3772231019).

10171215381 is an equidigital number, since it uses as much as digits as its factorization.

10171215381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100668.

The product of its (nonzero) digits is 1680, while the sum is 30.

The spelling of 10171215381 in words is "ten billion, one hundred seventy-one million, two hundred fifteen thousand, three hundred eighty-one".