40641055163 has 4 divisors (see below), whose sum is σ = 40649190000. Its totient is φ = 40632920328.

The previous prime is 40641055123. The next prime is 40641055193. The reversal of 40641055163 is 36155014604.

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

It is a cyclic number.

It is not a de Polignac number, because 40641055163 - 2¹⁸ = 40640793019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40641055123) 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, 4059920 + ... + 4069917.

It is an arithmetic number, because the mean of its divisors is an integer number (10162297500).

Almost surely, 2^40641055163 is an apocalyptic number.

40641055163 is a deficient number, since it is larger than the sum of its proper divisors (8134837).

40641055163 is an equidigital number, since it uses as much as digits as its factorization.

40641055163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8134836.

The product of its (nonzero) digits is 43200, while the sum is 35.

Adding to 40641055163 its reverse (36155014604), we get a palindrome (76796069767).

The spelling of 40641055163 in words is "forty billion, six hundred forty-one million, fifty-five thousand, one hundred sixty-three".