40022821973 has 2 divisors, whose sum is σ = 40022821974. Its totient is φ = 40022821972.

The previous prime is 40022821919. The next prime is 40022821997. The reversal of 40022821973 is 37912822004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29521081489 + 10501740484 = 171817^2 + 102478^2 .

It is a cyclic number.

It is not a de Polignac number, because 40022821973 - 2³² = 35727854677 is a prime.

It is a super-2 number, since 2×40022821973² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40022821873) 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, 20011410986 + 20011410987.

It is an arithmetic number, because the mean of its divisors is an integer number (20011410987).

Almost surely, 2^40022821973 is an apocalyptic number.

It is an amenable number.

40022821973 is a deficient number, since it is larger than the sum of its proper divisors (1).

40022821973 is an equidigital number, since it uses as much as digits as its factorization.

40022821973 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 38.

The spelling of 40022821973 in words is "forty billion, twenty-two million, eight hundred twenty-one thousand, nine hundred seventy-three".