40845179393 has 2 divisors, whose sum is σ = 40845179394. Its totient is φ = 40845179392.

The previous prime is 40845179371. The next prime is 40845179447. The reversal of 40845179393 is 39397154804.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34781131009 + 6064048384 = 186497^2 + 77872^2 .

It is a cyclic number.

It is not a de Polignac number, because 40845179393 - 2¹² = 40845175297 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (40845179293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20422589696 + 20422589697.

It is an arithmetic number, because the mean of its divisors is an integer number (20422589697).

Almost surely, 2^40845179393 is an apocalyptic number.

It is an amenable number.

40845179393 is a deficient number, since it is larger than the sum of its proper divisors (1).

40845179393 is an equidigital number, since it uses as much as digits as its factorization.

40845179393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3265920, while the sum is 53.

The spelling of 40845179393 in words is "forty billion, eight hundred forty-five million, one hundred seventy-nine thousand, three hundred ninety-three".