40512635819 has 2 divisors, whose sum is σ = 40512635820. Its totient is φ = 40512635818.

The previous prime is 40512635719. The next prime is 40512635833. The reversal of 40512635819 is 91853621504.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40512635819 - 2¹⁶ = 40512570283 is a prime.

It is a super-2 number, since 2×40512635819² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40512635819.

It is not a weakly prime, because it can be changed into another prime (40512635879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20256317909 + 20256317910.

It is an arithmetic number, because the mean of its divisors is an integer number (20256317910).

Almost surely, 2^40512635819 is an apocalyptic number.

40512635819 is a deficient number, since it is larger than the sum of its proper divisors (1).

40512635819 is an equidigital number, since it uses as much as digits as its factorization.

40512635819 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 259200, while the sum is 44.

The spelling of 40512635819 in words is "forty billion, five hundred twelve million, six hundred thirty-five thousand, eight hundred nineteen".