40744485561 has 16 divisors (see below), whose sum is σ = 58510174016. Its totient is φ = 25071270336.

The previous prime is 40744485491. The next prime is 40744485619. The reversal of 40744485561 is 16558444704.

It is not a de Polignac number, because 40744485561 - 2¹¹ = 40744483513 is a prime.

It is a super-2 number, since 2×40744485561² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40744485561.

It is not an unprimeable number, because it can be changed into a prime (40744085561) 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, 460626 + ... + 541908.

It is an arithmetic number, because the mean of its divisors is an integer number (3656885876).

Almost surely, 2^40744485561 is an apocalyptic number.

It is an amenable number.

40744485561 is a deficient number, since it is larger than the sum of its proper divisors (17765688455).

40744485561 is a wasteful number, since it uses less digits than its factorization.

40744485561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94152.

The product of its (nonzero) digits is 2150400, while the sum is 48.

The spelling of 40744485561 in words is "forty billion, seven hundred forty-four million, four hundred eighty-five thousand, five hundred sixty-one".