40042145510641 has 4 divisors (see below), whose sum is σ = 40137711490800. Its totient is φ = 39946579530484.

The previous prime is 40042145510617. The next prime is 40042145510651. The reversal of 40042145510641 is 14601554124004.

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 40042145510641 - 2¹¹ = 40042145508593 is a prime.

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 40042145510641.

It is not an unprimeable number, because it can be changed into a prime (40042145510651) 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, 47782989451 + ... + 47782990288.

It is an arithmetic number, because the mean of its divisors is an integer number (10034427872700).

Almost surely, 2^{40042145510641} is an apocalyptic number.

It is an amenable number.

40042145510641 is a deficient number, since it is larger than the sum of its proper divisors (95565980159).

40042145510641 is an equidigital number, since it uses as much as digits as its factorization.

40042145510641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95565980158.

The product of its (nonzero) digits is 76800, while the sum is 37.

Adding to 40042145510641 its reverse (14601554124004), we get a palindrome (54643699634645).

The spelling of 40042145510641 in words is "forty trillion, forty-two billion, one hundred forty-five million, five hundred ten thousand, six hundred forty-one".