64052218729 has 4 divisors (see below), whose sum is σ = 64476405760. Its totient is φ = 63628031700.

The previous prime is 64052218723. The next prime is 64052218751. The reversal of 64052218729 is 92781225046.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 64052218729 - 2²³ = 64043830121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64052218723) 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, 212093289 + ... + 212093590.

It is an arithmetic number, because the mean of its divisors is an integer number (16119101440).

Almost surely, 2^64052218729 is an apocalyptic number.

It is an amenable number.

64052218729 is a deficient number, since it is larger than the sum of its proper divisors (424187031).

64052218729 is a wasteful number, since it uses less digits than its factorization.

64052218729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424187030.

The product of its (nonzero) digits is 483840, while the sum is 46.

The spelling of 64052218729 in words is "sixty-four billion, fifty-two million, two hundred eighteen thousand, seven hundred twenty-nine".