400202332993 has 2 divisors, whose sum is σ = 400202332994. Its totient is φ = 400202332992.

The previous prime is 400202332991. The next prime is 400202332997. The reversal of 400202332993 is 399233202004.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 302579205184 + 97623127809 = 550072^2 + 312447^2 .

It is a cyclic number.

It is not a de Polignac number, because 400202332993 - 2¹ = 400202332991 is a prime.

Together with 400202332991, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (400202332991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200101166496 + 200101166497.

It is an arithmetic number, because the mean of its divisors is an integer number (200101166497).

Almost surely, 2^400202332993 is an apocalyptic number.

It is an amenable number.

400202332993 is a deficient number, since it is larger than the sum of its proper divisors (1).

400202332993 is an equidigital number, since it uses as much as digits as its factorization.

400202332993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69984, while the sum is 37.

Adding to 400202332993 its reverse (399233202004), we get a palindrome (799435534997).

The spelling of 400202332993 in words is "four hundred billion, two hundred two million, three hundred thirty-two thousand, nine hundred ninety-three".