64616162243 has 4 divisors (see below), whose sum is σ = 65243503728. Its totient is φ = 63988820760.

The previous prime is 64616162239. The next prime is 64616162251. The reversal of 64616162243 is 34226161646.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 64616162243 - 2² = 64616162239 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 64616162243.

It is not an unprimeable number, because it can be changed into a prime (64616161243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 313670588 + ... + 313670793.

It is an arithmetic number, because the mean of its divisors is an integer number (16310875932).

Almost surely, 2^64616162243 is an apocalyptic number.

64616162243 is a deficient number, since it is larger than the sum of its proper divisors (627341485).

64616162243 is a wasteful number, since it uses less digits than its factorization.

64616162243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 627341484.

The product of its digits is 248832, while the sum is 41.

The spelling of 64616162243 in words is "sixty-four billion, six hundred sixteen million, one hundred sixty-two thousand, two hundred forty-three".