64274748722 has 6 divisors (see below), whose sum is σ = 96412660893.
Its totient is φ = 32137195092.
The previous prime is 64274748697. The next prime is 64274748731. The reversal of 64274748722 is 22784747246.
It can be written as a sum of positive squares in 2 ways, for example, as 49106116801 + 15168631921 = 221599^2 + 123161^2
It is an ABA number since it can be written as A⋅BA, here for A=2, B=179269.
It is a Duffinian number.
It is an unprimeable number.
It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 268904 + ... + 448172.
Almost surely, 264274748722 is an apocalyptic number.
64274748722 is a deficient number, since it is larger than the sum of its proper divisors (32137912171).
64274748722 is an frugal number, since it uses more digits than its factorization.
64274748722 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 358540 (or 179271 counting only the distinct ones).
The product of its digits is 8429568, while the sum is 53.
The spelling of 64274748722 in words is "sixty-four billion, two hundred seventy-four million, seven hundred forty-eight thousand, seven hundred twenty-two".