64611346213 has 4 divisors (see below), whose sum is σ = 66187232748. Its totient is φ = 63035459680.

The previous prime is 64611346207. The next prime is 64611346223. The reversal of 64611346213 is 31264311646.

64611346213 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.

It can be written as a sum of positive squares in 2 ways, for example, as 10728402084 + 53882944129 = 103578^2 + 232127^2 .

It is a cyclic number.

It is not a de Polignac number, because 64611346213 - 2²⁵ = 64577791781 is a prime.

It is a super-2 number, since 2×64611346213² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64611346223) 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, 787943206 + ... + 787943287.

It is an arithmetic number, because the mean of its divisors is an integer number (16546808187).

Almost surely, 2^64611346213 is an apocalyptic number.

It is an amenable number.

64611346213 is a deficient number, since it is larger than the sum of its proper divisors (1575886535).

64611346213 is a wasteful number, since it uses less digits than its factorization.

64611346213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1575886534.

The product of its digits is 62208, while the sum is 37.

Adding to 64611346213 its reverse (31264311646), we get a palindrome (95875657859).

The spelling of 64611346213 in words is "sixty-four billion, six hundred eleven million, three hundred forty-six thousand, two hundred thirteen".