40164144249 has 4 divisors (see below), whose sum is σ = 53552192336. Its totient is φ = 26776096164.

The previous prime is 40164144203. The next prime is 40164144253. The reversal of 40164144249 is 94244146104.

It is a happy number.

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 not a de Polignac number, because 40164144249 - 2¹³ = 40164136057 is a prime.

It is a super-2 number, since 2×40164144249² (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 (40164144049) 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 3 ways as a sum of consecutive naturals, for example, 6694024039 + ... + 6694024044.

It is an arithmetic number, because the mean of its divisors is an integer number (13388048084).

Almost surely, 2^40164144249 is an apocalyptic number.

It is an amenable number.

40164144249 is a deficient number, since it is larger than the sum of its proper divisors (13388048087).

40164144249 is a wasteful number, since it uses less digits than its factorization.

40164144249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13388048086.

The product of its (nonzero) digits is 110592, while the sum is 39.

The spelling of 40164144249 in words is "forty billion, one hundred sixty-four million, one hundred forty-four thousand, two hundred forty-nine".