40566998837 has 2 divisors, whose sum is σ = 40566998838. Its totient is φ = 40566998836.

The previous prime is 40566998707. The next prime is 40566998873. The reversal of 40566998837 is 73889966504.

Together with next prime (40566998873) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30905288401 + 9661710436 = 175799^2 + 98294^2 .

It is a cyclic number.

It is not a de Polignac number, because 40566998837 - 2³² = 36272031541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40566998137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20283499418 + 20283499419.

It is an arithmetic number, because the mean of its divisors is an integer number (20283499419).

Almost surely, 2^40566998837 is an apocalyptic number.

It is an amenable number.

40566998837 is a deficient number, since it is larger than the sum of its proper divisors (1).

40566998837 is an equidigital number, since it uses as much as digits as its factorization.

40566998837 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 78382080, while the sum is 65.

The spelling of 40566998837 in words is "forty billion, five hundred sixty-six million, nine hundred ninety-eight thousand, eight hundred thirty-seven".