40749168481 has 4 divisors (see below), whose sum is σ = 46570478272. Its totient is φ = 34927858692.

The previous prime is 40749168479. The next prime is 40749168491. The reversal of 40749168481 is 18486194704.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40749168481 - 2¹ = 40749168479 is a prime.

It is a super-2 number, since 2×40749168481² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40749168491) 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, 2910654885 + ... + 2910654898.

It is an arithmetic number, because the mean of its divisors is an integer number (11642619568).

Almost surely, 2^40749168481 is an apocalyptic number.

It is an amenable number.

40749168481 is a deficient number, since it is larger than the sum of its proper divisors (5821309791).

40749168481 is an equidigital number, since it uses as much as digits as its factorization.

40749168481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5821309790.

The product of its (nonzero) digits is 1548288, while the sum is 52.

The spelling of 40749168481 in words is "forty billion, seven hundred forty-nine million, one hundred sixty-eight thousand, four hundred eighty-one".