40451023213 has 2 divisors, whose sum is σ = 40451023214. Its totient is φ = 40451023212.

The previous prime is 40451023169. The next prime is 40451023271. The reversal of 40451023213 is 31232015404.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37821692484 + 2629330729 = 194478^2 + 51277^2 .

It is a cyclic number.

It is not a de Polignac number, because 40451023213 - 2²¹ = 40448926061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40451023273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20225511606 + 20225511607.

It is an arithmetic number, because the mean of its divisors is an integer number (20225511607).

Almost surely, 2^40451023213 is an apocalyptic number.

It is an amenable number.

40451023213 is a deficient number, since it is larger than the sum of its proper divisors (1).

40451023213 is an equidigital number, since it uses as much as digits as its factorization.

40451023213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 40451023213 its reverse (31232015404), we get a palindrome (71683038617).

The spelling of 40451023213 in words is "forty billion, four hundred fifty-one million, twenty-three thousand, two hundred thirteen".