40534665615361 has 4 divisors (see below), whose sum is σ = 40534680441924. Its totient is φ = 40534650788800.

The previous prime is 40534665615359. The next prime is 40534665615373. The reversal of 40534665615361 is 16351656643504.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12586991274225 + 27947674341136 = 3547815^2 + 5286556^2 .

It is a cyclic number.

It is not a de Polignac number, because 40534665615361 - 2¹ = 40534665615359 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40534665615161) 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, 1989820 + ... + 9221101.

It is an arithmetic number, because the mean of its divisors is an integer number (10133670110481).

Almost surely, 2^{40534665615361} is an apocalyptic number.

It is an amenable number.

40534665615361 is a deficient number, since it is larger than the sum of its proper divisors (14826563).

40534665615361 is a wasteful number, since it uses less digits than its factorization.

40534665615361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14826562.

The product of its (nonzero) digits is 23328000, while the sum is 55.

The spelling of 40534665615361 in words is "forty trillion, five hundred thirty-four billion, six hundred sixty-five million, six hundred fifteen thousand, three hundred sixty-one".