40104243251 has 2 divisors, whose sum is σ = 40104243252. Its totient is φ = 40104243250.

The previous prime is 40104243241. The next prime is 40104243299. The reversal of 40104243251 is 15234240104.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40104243251 - 2⁶ = 40104243187 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40104243251.

It is not a weakly prime, because it can be changed into another prime (40104243241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20052121625 + 20052121626.

It is an arithmetic number, because the mean of its divisors is an integer number (20052121626).

Almost surely, 2^40104243251 is an apocalyptic number.

40104243251 is a deficient number, since it is larger than the sum of its proper divisors (1).

40104243251 is an equidigital number, since it uses as much as digits as its factorization.

40104243251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3840, while the sum is 26.

Adding to 40104243251 its reverse (15234240104), we get a palindrome (55338483355).

The spelling of 40104243251 in words is "forty billion, one hundred four million, two hundred forty-three thousand, two hundred fifty-one".