40750253821 has 2 divisors, whose sum is σ = 40750253822. Its totient is φ = 40750253820.

The previous prime is 40750253813. The next prime is 40750253833. The reversal of 40750253821 is 12835205704.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27692620921 + 13057632900 = 166411^2 + 114270^2 .

It is a cyclic number.

It is not a de Polignac number, because 40750253821 - 2³ = 40750253813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40750253851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20375126910 + 20375126911.

It is an arithmetic number, because the mean of its divisors is an integer number (20375126911).

Almost surely, 2^40750253821 is an apocalyptic number.

It is an amenable number.

40750253821 is a deficient number, since it is larger than the sum of its proper divisors (1).

40750253821 is an equidigital number, since it uses as much as digits as its factorization.

40750253821 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 67200, while the sum is 37.

The spelling of 40750253821 in words is "forty billion, seven hundred fifty million, two hundred fifty-three thousand, eight hundred twenty-one".