40123315563 has 16 divisors (see below), whose sum is σ = 55828490496. Its totient is φ = 25583706720.

The previous prime is 40123315541. The next prime is 40123315567. The reversal of 40123315563 is 36551332104.

It is not a de Polignac number, because 40123315563 - 2¹² = 40123311467 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40123315567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1314333 + ... + 1344513.

It is an arithmetic number, because the mean of its divisors is an integer number (3489280656).

Almost surely, 2^40123315563 is an apocalyptic number.

40123315563 is a deficient number, since it is larger than the sum of its proper divisors (15705174933).

40123315563 is a wasteful number, since it uses less digits than its factorization.

40123315563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49474.

The product of its (nonzero) digits is 32400, while the sum is 33.

Adding to 40123315563 its reverse (36551332104), we get a palindrome (76674647667).

The spelling of 40123315563 in words is "forty billion, one hundred twenty-three million, three hundred fifteen thousand, five hundred sixty-three".