40042444060361 has 2 divisors, whose sum is σ = 40042444060362. Its totient is φ = 40042444060360.

The previous prime is 40042444060349. The next prime is 40042444060379. The reversal of 40042444060361 is 16306044424004.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24022437810361 + 16020006250000 = 4901269^2 + 4002500^2 .

It is a cyclic number.

It is not a de Polignac number, because 40042444060361 - 2²² = 40042439866057 is a prime.

It is a super-2 number, since 2×40042444060361² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40042444060331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20021222030180 + 20021222030181.

It is an arithmetic number, because the mean of its divisors is an integer number (20021222030181).

Almost surely, 2^{40042444060361} is an apocalyptic number.

It is an amenable number.

40042444060361 is a deficient number, since it is larger than the sum of its proper divisors (1).

40042444060361 is an equidigital number, since it uses as much as digits as its factorization.

40042444060361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 221184, while the sum is 38.

Adding to 40042444060361 its reverse (16306044424004), we get a palindrome (56348488484365).

The spelling of 40042444060361 in words is "forty trillion, forty-two billion, four hundred forty-four million, sixty thousand, three hundred sixty-one".