40433516647 has 2 divisors, whose sum is σ = 40433516648. Its totient is φ = 40433516646.

The previous prime is 40433516633. The next prime is 40433516657. The reversal of 40433516647 is 74661533404.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40433516647 - 2¹⁵ = 40433483879 is a prime.

It is a super-2 number, since 2×40433516647² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40433516657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20216758323 + 20216758324.

It is an arithmetic number, because the mean of its divisors is an integer number (20216758324).

Almost surely, 2^40433516647 is an apocalyptic number.

40433516647 is a deficient number, since it is larger than the sum of its proper divisors (1).

40433516647 is an equidigital number, since it uses as much as digits as its factorization.

40433516647 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 725760, while the sum is 43.

The spelling of 40433516647 in words is "forty billion, four hundred thirty-three million, five hundred sixteen thousand, six hundred forty-seven".