40163120663 has 4 divisors (see below), whose sum is σ = 40249866528. Its totient is φ = 40076374800.

The previous prime is 40163120659. The next prime is 40163120671. The reversal of 40163120663 is 36602136104.

40163120663 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 is a cyclic number.

It is not a de Polignac number, because 40163120663 - 2² = 40163120659 is a prime.

It is a super-2 number, since 2×40163120663² (a number of 22 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 (40163120633) 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, 43372238 + ... + 43373163.

It is an arithmetic number, because the mean of its divisors is an integer number (10062466632).

Almost surely, 2^40163120663 is an apocalyptic number.

40163120663 is a deficient number, since it is larger than the sum of its proper divisors (86745865).

40163120663 is an equidigital number, since it uses as much as digits as its factorization.

40163120663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86745864.

The product of its (nonzero) digits is 15552, while the sum is 32.

Adding to 40163120663 its reverse (36602136104), we get a palindrome (76765256767).

The spelling of 40163120663 in words is "forty billion, one hundred sixty-three million, one hundred twenty thousand, six hundred sixty-three".