40501521241 has 4 divisors (see below), whose sum is σ = 40502434212. Its totient is φ = 40500608272.

The previous prime is 40501521223. The next prime is 40501521251. The reversal of 40501521241 is 14212510504.

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 37392343641 + 3109177600 = 193371^2 + 55760^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40501521241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40501521251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 386350 + ... + 479863.

It is an arithmetic number, because the mean of its divisors is an integer number (10125608553).

Almost surely, 2^40501521241 is an apocalyptic number.

It is an amenable number.

40501521241 is a deficient number, since it is larger than the sum of its proper divisors (912971).

40501521241 is an equidigital number, since it uses as much as digits as its factorization.

40501521241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 912970.

The product of its (nonzero) digits is 1600, while the sum is 25.

The spelling of 40501521241 in words is "forty billion, five hundred one million, five hundred twenty-one thousand, two hundred forty-one".