64213074109 has 4 divisors (see below), whose sum is σ = 64781331516. Its totient is φ = 63644816704.

The previous prime is 64213074103. The next prime is 64213074137. The reversal of 64213074109 is 90147031246.

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 26130722500 + 38082351609 = 161650^2 + 195147^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64213074109 is a prime.

It is a super-2 number, since 2×64213074109² (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 (64213074103) 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, 284128534 + ... + 284128759.

It is an arithmetic number, because the mean of its divisors is an integer number (16195332879).

Almost surely, 2^64213074109 is an apocalyptic number.

It is an amenable number.

64213074109 is a deficient number, since it is larger than the sum of its proper divisors (568257407).

64213074109 is a wasteful number, since it uses less digits than its factorization.

64213074109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 568257406.

The product of its (nonzero) digits is 36288, while the sum is 37.

The spelling of 64213074109 in words is "sixty-four billion, two hundred thirteen million, seventy-four thousand, one hundred nine".