64294249193 has 4 divisors (see below), whose sum is σ = 64763550420. Its totient is φ = 63824947968.

The previous prime is 64294249189. The next prime is 64294249213. The reversal of 64294249193 is 39194249246.

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

It can be written as a sum of positive squares in 2 ways, for example, as 29264260624 + 35029988569 = 171068^2 + 187163^2 .

It is a cyclic number.

It is not a de Polignac number, because 64294249193 - 2² = 64294249189 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64294249163) 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, 234650408 + ... + 234650681.

It is an arithmetic number, because the mean of its divisors is an integer number (16190887605).

Almost surely, 2^64294249193 is an apocalyptic number.

It is an amenable number.

64294249193 is a deficient number, since it is larger than the sum of its proper divisors (469301227).

64294249193 is a wasteful number, since it uses less digits than its factorization.

64294249193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469301226.

The product of its digits is 3359232, while the sum is 53.

Adding to 64294249193 its sum of digits (53), we get a palindrome (64294249246).

The spelling of 64294249193 in words is "sixty-four billion, two hundred ninety-four million, two hundred forty-nine thousand, one hundred ninety-three".