402444103021313 has 2 divisors, whose sum is σ = 402444103021314. Its totient is φ = 402444103021312.

The previous prime is 402444103021243. The next prime is 402444103021343. The reversal of 402444103021313 is 313120301444204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 372305013172849 + 30139089848464 = 19295207^2 + 5489908^2 .

It is a cyclic number.

It is not a de Polignac number, because 402444103021313 - 2²⁴ = 402444086244097 is a prime.

It is a super-2 number, since 2×402444103021313² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 402444103021313.

It is not a weakly prime, because it can be changed into another prime (402444103021343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201222051510656 + 201222051510657.

It is an arithmetic number, because the mean of its divisors is an integer number (201222051510657).

Almost surely, 2^{402444103021313} is an apocalyptic number.

It is an amenable number.

402444103021313 is a deficient number, since it is larger than the sum of its proper divisors (1).

402444103021313 is an equidigital number, since it uses as much as digits as its factorization.

402444103021313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27648, while the sum is 32.

Adding to 402444103021313 its reverse (313120301444204), we get a palindrome (715564404465517).

The spelling of 402444103021313 in words is "four hundred two trillion, four hundred forty-four billion, one hundred three million, twenty-one thousand, three hundred thirteen".