40204661547641 has 8 divisors (see below), whose sum is σ = 40437663391944. Its totient is φ = 39971914214400.

The previous prime is 40204661547637. The next prime is 40204661547667. The reversal of 40204661547641 is 14674516640204.

It can be written as a sum of positive squares in 4 ways, for example, as 2364508988416 + 37840152559225 = 1537696^2 + 6151435^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40204661547641 - 2² = 40204661547637 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 40204661547641.

It is not an unprimeable number, because it can be changed into a prime (40204661547691) 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 7 ways as a sum of consecutive naturals, for example, 63310910 + ... + 63942791.

It is an arithmetic number, because the mean of its divisors is an integer number (5054707923993).

Almost surely, 2^{40204661547641} is an apocalyptic number.

It is an amenable number.

40204661547641 is a deficient number, since it is larger than the sum of its proper divisors (233001844303).

40204661547641 is a wasteful number, since it uses less digits than its factorization.

40204661547641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127255531.

The product of its (nonzero) digits is 3870720, while the sum is 50.

The spelling of 40204661547641 in words is "forty trillion, two hundred four billion, six hundred sixty-one million, five hundred forty-seven thousand, six hundred forty-one".