40321012273 has 2 divisors, whose sum is σ = 40321012274. Its totient is φ = 40321012272.

The previous prime is 40321012271. The next prime is 40321012349. The reversal of 40321012273 is 37221012304.

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., 39145413904 + 1175598369 = 197852^2 + 34287^2 .

It is a cyclic number.

It is not a de Polignac number, because 40321012273 - 2¹ = 40321012271 is a prime.

Together with 40321012271, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (40321012271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20160506136 + 20160506137.

It is an arithmetic number, because the mean of its divisors is an integer number (20160506137).

Almost surely, 2^40321012273 is an apocalyptic number.

It is an amenable number.

40321012273 is a deficient number, since it is larger than the sum of its proper divisors (1).

40321012273 is an equidigital number, since it uses as much as digits as its factorization.

40321012273 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 25.

Adding to 40321012273 its reverse (37221012304), we get a palindrome (77542024577).

The spelling of 40321012273 in words is "forty billion, three hundred twenty-one million, twelve thousand, two hundred seventy-three".