40523631505 has 16 divisors (see below), whose sum is σ = 56867716224. Its totient is φ = 27141408000.

The previous prime is 40523631457. The next prime is 40523631517. The reversal of 40523631505 is 50513632504.

It is a de Polignac number, because none of the positive numbers 2^k-40523631505 is a prime.

It is a super-3 number, since 3×40523631505³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

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, 13461496 + ... + 13464505.

It is an arithmetic number, because the mean of its divisors is an integer number (3554232264).

Almost surely, 2^40523631505 is an apocalyptic number.

It is an amenable number.

40523631505 is a deficient number, since it is larger than the sum of its proper divisors (16344084719).

40523631505 is a wasteful number, since it uses less digits than its factorization.

40523631505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26926056.

The product of its (nonzero) digits is 54000, while the sum is 34.

Subtracting 40523631505 from its reverse (50513632504), we obtain a palindrome (9990000999).

The spelling of 40523631505 in words is "forty billion, five hundred twenty-three million, six hundred thirty-one thousand, five hundred five".