64841254243 has 4 divisors (see below), whose sum is σ = 64851454168. Its totient is φ = 64831054320.

The previous prime is 64841254211. The next prime is 64841254249. The reversal of 64841254243 is 34245214846.

64841254243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34245214846 = 2 ⋅17122607423.

It is a cyclic number.

It is not a de Polignac number, because 64841254243 - 2⁵ = 64841254211 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64841254243.

It is not an unprimeable number, because it can be changed into a prime (64841254249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5090421 + ... + 5103142.

It is an arithmetic number, because the mean of its divisors is an integer number (16212863542).

Almost surely, 2^64841254243 is an apocalyptic number.

64841254243 is a deficient number, since it is larger than the sum of its proper divisors (10199925).

64841254243 is a wasteful number, since it uses less digits than its factorization.

64841254243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10199924.

The product of its digits is 737280, while the sum is 43.

The spelling of 64841254243 in words is "sixty-four billion, eight hundred forty-one million, two hundred fifty-four thousand, two hundred forty-three".