40122566563 has 4 divisors (see below), whose sum is σ = 40976238240. Its totient is φ = 39268894888.

The previous prime is 40122566489. The next prime is 40122566599. The reversal of 40122566563 is 36566522104.

It is a happy number.

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 40122566563 - 2⁹ = 40122566051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40122566663) 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, 426835768 + ... + 426835861.

It is an arithmetic number, because the mean of its divisors is an integer number (10244059560).

Almost surely, 2^40122566563 is an apocalyptic number.

40122566563 is a deficient number, since it is larger than the sum of its proper divisors (853671677).

40122566563 is an equidigital number, since it uses as much as digits as its factorization.

40122566563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 853671676.

The product of its (nonzero) digits is 259200, while the sum is 40.

The spelling of 40122566563 in words is "forty billion, one hundred twenty-two million, five hundred sixty-six thousand, five hundred sixty-three".