640201537043 has 2 divisors, whose sum is σ = 640201537044. Its totient is φ = 640201537042.

The previous prime is 640201537013. The next prime is 640201537081. The reversal of 640201537043 is 340735102046.

640201537043 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 640201537043 - 2¹² = 640201532947 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 640201536994 and 640201537012.

It is not a weakly prime, because it can be changed into another prime (640201537013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 320100768521 + 320100768522.

It is an arithmetic number, because the mean of its divisors is an integer number (320100768522).

Almost surely, 2^640201537043 is an apocalyptic number.

640201537043 is a deficient number, since it is larger than the sum of its proper divisors (1).

640201537043 is an equidigital number, since it uses as much as digits as its factorization.

640201537043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60480, while the sum is 35.

Adding to 640201537043 its reverse (340735102046), we get a palindrome (980936639089).

The spelling of 640201537043 in words is "six hundred forty billion, two hundred one million, five hundred thirty-seven thousand, forty-three".