64031137543 has 2 divisors, whose sum is σ = 64031137544. Its totient is φ = 64031137542.

The previous prime is 64031137507. The next prime is 64031137613. The reversal of 64031137543 is 34573113046.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64031137543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64031137943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32015568771 + 32015568772.

It is an arithmetic number, because the mean of its divisors is an integer number (32015568772).

Almost surely, 2^64031137543 is an apocalyptic number.

64031137543 is a deficient number, since it is larger than the sum of its proper divisors (1).

64031137543 is an equidigital number, since it uses as much as digits as its factorization.

64031137543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90720, while the sum is 37.

The spelling of 64031137543 in words is "sixty-four billion, thirty-one million, one hundred thirty-seven thousand, five hundred forty-three".