40434520663 has 8 divisors (see below), whose sum is σ = 40620883968. Its totient is φ = 40248578904.

The previous prime is 40434520613. The next prime is 40434520691. The reversal of 40434520663 is 36602543404.

It is a happy number.

40434520663 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40434520663 is a prime.

It is a super-2 number, since 2×40434520663² (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 (40434520613) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87706 + ... + 297592.

It is an arithmetic number, because the mean of its divisors is an integer number (5077610496).

Almost surely, 2^40434520663 is an apocalyptic number.

40434520663 is a deficient number, since it is larger than the sum of its proper divisors (186363305).

40434520663 is a wasteful number, since it uses less digits than its factorization.

40434520663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210773.

The product of its (nonzero) digits is 207360, while the sum is 37.

The spelling of 40434520663 in words is "forty billion, four hundred thirty-four million, five hundred twenty thousand, six hundred sixty-three".