64994830543 has 2 divisors, whose sum is σ = 64994830544. Its totient is φ = 64994830542.

The previous prime is 64994830519. The next prime is 64994830553. The reversal of 64994830543 is 34503849946.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64994830543 - 2²⁵ = 64961276111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64994830553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32497415271 + 32497415272.

It is an arithmetic number, because the mean of its divisors is an integer number (32497415272).

Almost surely, 2^64994830543 is an apocalyptic number.

64994830543 is a deficient number, since it is larger than the sum of its proper divisors (1).

64994830543 is an equidigital number, since it uses as much as digits as its factorization.

64994830543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11197440, while the sum is 55.

The spelling of 64994830543 in words is "sixty-four billion, nine hundred ninety-four million, eight hundred thirty thousand, five hundred forty-three".