40300040024821 has 2 divisors, whose sum is σ = 40300040024822. Its totient is φ = 40300040024820.

The previous prime is 40300040024801. The next prime is 40300040024857. The reversal of 40300040024821 is 12842004000304.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30529326862225 + 9770713162596 = 5525335^2 + 3125814^2 .

It is a cyclic number.

It is not a de Polignac number, because 40300040024821 - 2¹⁹ = 40300039500533 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40300040024821.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40300040024801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20150020012410 + 20150020012411.

It is an arithmetic number, because the mean of its divisors is an integer number (20150020012411).

Almost surely, 2^{40300040024821} is an apocalyptic number.

It is an amenable number.

40300040024821 is a deficient number, since it is larger than the sum of its proper divisors (1).

40300040024821 is an equidigital number, since it uses as much as digits as its factorization.

40300040024821 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6144, while the sum is 28.

The spelling of 40300040024821 in words is "forty trillion, three hundred billion, forty million, twenty-four thousand, eight hundred twenty-one".