64520405270 has 8 divisors (see below), whose sum is σ = 116136729504. Its totient is φ = 25808162104.

The previous prime is 64520405251. The next prime is 64520405293. The reversal of 64520405270 is 7250402546.

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

It is a self number, because there is not a number n which added to its sum of digits gives 64520405270.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 3226020254 + ... + 3226020273.

It is an arithmetic number, because the mean of its divisors is an integer number (14517091188).

Almost surely, 2^64520405270 is an apocalyptic number.

64520405270 is a deficient number, since it is larger than the sum of its proper divisors (51616324234).

64520405270 is a wasteful number, since it uses less digits than its factorization.

64520405270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6452040534.

The product of its (nonzero) digits is 67200, while the sum is 35.

The spelling of 64520405270 in words is "sixty-four billion, five hundred twenty million, four hundred five thousand, two hundred seventy".