40147047497 has 2 divisors, whose sum is σ = 40147047498. Its totient is φ = 40147047496.

The previous prime is 40147047491. The next prime is 40147047553. The reversal of 40147047497 is 79474074104.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37494900496 + 2652147001 = 193636^2 + 51499^2 .

It is a cyclic number.

It is not a de Polignac number, because 40147047497 - 2²⁴ = 40130270281 is a prime.

It is a super-2 number, since 2×40147047497² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40147047491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20073523748 + 20073523749.

It is an arithmetic number, because the mean of its divisors is an integer number (20073523749).

Almost surely, 2^40147047497 is an apocalyptic number.

It is an amenable number.

40147047497 is a deficient number, since it is larger than the sum of its proper divisors (1).

40147047497 is an equidigital number, since it uses as much as digits as its factorization.

40147047497 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 790272, while the sum is 47.

The spelling of 40147047497 in words is "forty billion, one hundred forty-seven million, forty-seven thousand, four hundred ninety-seven".