10162543681 has 4 divisors (see below), whose sum is σ = 10182910000. Its totient is φ = 10142177364.

The previous prime is 10162543669. The next prime is 10162543693. The reversal of 10162543681 is 18634526101.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (10162543669) and next prime (10162543693).

It is a cyclic number.

It is not a de Polignac number, because 10162543681 - 2⁵ = 10162543649 is a prime.

It is a super-2 number, since 2×10162543681² (a number of 21 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 10162543681.

It is not an unprimeable number, because it can be changed into a prime (10162543621) 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, 10182411 + ... + 10183408.

It is an arithmetic number, because the mean of its divisors is an integer number (2545727500).

Almost surely, 2^10162543681 is an apocalyptic number.

It is an amenable number.

10162543681 is a deficient number, since it is larger than the sum of its proper divisors (20366319).

10162543681 is an equidigital number, since it uses as much as digits as its factorization.

10162543681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20366318.

The product of its (nonzero) digits is 34560, while the sum is 37.

The spelling of 10162543681 in words is "ten billion, one hundred sixty-two million, five hundred forty-three thousand, six hundred eighty-one".