10105772381 has 4 divisors (see below), whose sum is σ = 10106449500. Its totient is φ = 10105095264.

The previous prime is 10105772333. The next prime is 10105772393. The reversal of 10105772381 is 18327750101.

It is a happy number.

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 4220581156 + 5885191225 = 64966^2 + 76715^2 .

It is a cyclic number.

It is not a de Polignac number, because 10105772381 - 2⁶ = 10105772317 is a prime.

It is a super-2 number, since 2×10105772381² (a number of 21 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 (10105772321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 315656 + ... + 346193.

It is an arithmetic number, because the mean of its divisors is an integer number (2526612375).

Almost surely, 2^10105772381 is an apocalyptic number.

It is an amenable number.

10105772381 is a deficient number, since it is larger than the sum of its proper divisors (677119).

10105772381 is an equidigital number, since it uses as much as digits as its factorization.

10105772381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 677118.

The product of its (nonzero) digits is 11760, while the sum is 35.

The spelling of 10105772381 in words is "ten billion, one hundred five million, seven hundred seventy-two thousand, three hundred eighty-one".