40512213515321 has 16 divisors (see below), whose sum is σ = 41156073840000. Its totient is φ = 39870829272960.

The previous prime is 40512213515309. The next prime is 40512213515327. The reversal of 40512213515321 is 12351531221504.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40512213515321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40512213515327) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79573430 + ... + 80080928.

It is an arithmetic number, because the mean of its divisors is an integer number (2572254615000).

Almost surely, 2^{40512213515321} is an apocalyptic number.

It is an amenable number.

40512213515321 is a deficient number, since it is larger than the sum of its proper divisors (643860324679).

40512213515321 is a wasteful number, since it uses less digits than its factorization.

40512213515321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509936.

The product of its (nonzero) digits is 36000, while the sum is 35.

Adding to 40512213515321 its reverse (12351531221504), we get a palindrome (52863744736825).

The spelling of 40512213515321 in words is "forty trillion, five hundred twelve billion, two hundred thirteen million, five hundred fifteen thousand, three hundred twenty-one".