64115216747 has 8 divisors (see below), whose sum is σ = 67413401040. Its totient is φ = 60889520160.

The previous prime is 64115216743. The next prime is 64115216791. The reversal of 64115216747 is 74761251146.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64115216747 - 2² = 64115216743 is a prime.

It is a super-2 number, since 2×64115216747² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64115216698 and 64115216707.

It is not an unprimeable number, because it can be changed into a prime (64115216743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18120113 + ... + 18123650.

It is an arithmetic number, because the mean of its divisors is an integer number (8426675130).

Almost surely, 2^64115216747 is an apocalyptic number.

64115216747 is a deficient number, since it is larger than the sum of its proper divisors (3298184293).

64115216747 is a wasteful number, since it uses less digits than its factorization.

64115216747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36243853.

The product of its digits is 282240, while the sum is 44.

The spelling of 64115216747 in words is "sixty-four billion, one hundred fifteen million, two hundred sixteen thousand, seven hundred forty-seven".