40643135101 has 4 divisors (see below), whose sum is σ = 43033907772. Its totient is φ = 38252362432.

The previous prime is 40643135089. The next prime is 40643135147. The reversal of 40643135101 is 10153134604.

40643135101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 24040812601 + 16602322500 = 155051^2 + 128850^2 .

It is a cyclic number.

It is not a de Polignac number, because 40643135101 - 2¹⁵ = 40643102333 is a prime.

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 40643135101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40643135191) 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, 1195386310 + ... + 1195386343.

It is an arithmetic number, because the mean of its divisors is an integer number (10758476943).

Almost surely, 2^40643135101 is an apocalyptic number.

It is an amenable number.

40643135101 is a deficient number, since it is larger than the sum of its proper divisors (2390772671).

40643135101 is a wasteful number, since it uses less digits than its factorization.

40643135101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2390772670.

The product of its (nonzero) digits is 4320, while the sum is 28.

Adding to 40643135101 its reverse (10153134604), we get a palindrome (50796269705).

The spelling of 40643135101 in words is "forty billion, six hundred forty-three million, one hundred thirty-five thousand, one hundred one".