64615028755 has 8 divisors (see below), whose sum is σ = 77584558032. Its totient is φ = 51661007328.

The previous prime is 64615028719. The next prime is 64615028767. The reversal of 64615028755 is 55782051646.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64615028755 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64615028699 and 64615028708.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3867792 + ... + 3884461.

It is an arithmetic number, because the mean of its divisors is an integer number (9698069754).

Almost surely, 2^64615028755 is an apocalyptic number.

64615028755 is a deficient number, since it is larger than the sum of its proper divisors (12969529277).

64615028755 is a wasteful number, since it uses less digits than its factorization.

64615028755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7753925.

The product of its (nonzero) digits is 2016000, while the sum is 49.

The spelling of 64615028755 in words is "sixty-four billion, six hundred fifteen million, twenty-eight thousand, seven hundred fifty-five".