64263051256515 has 64 divisors (see below), whose sum is σ = 111647292641280. Its totient is φ = 31478333040000.

The previous prime is 64263051256511. The next prime is 64263051256519. The reversal of 64263051256515 is 51565215036246.

64263051256515 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (64263051256511) and next prime (64263051256519).

It is not a de Polignac number, because 64263051256515 - 2² = 64263051256511 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64263051256511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 35835361 + ... + 37585890.

It is an arithmetic number, because the mean of its divisors is an integer number (1744488947520).

Almost surely, 2^{64263051256515} is an apocalyptic number.

64263051256515 is a deficient number, since it is larger than the sum of its proper divisors (47384241384765).

64263051256515 is a wasteful number, since it uses less digits than its factorization.

64263051256515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73421384.

The product of its (nonzero) digits is 6480000, while the sum is 51.

The spelling of 64263051256515 in words is "sixty-four trillion, two hundred sixty-three billion, fifty-one million, two hundred fifty-six thousand, five hundred fifteen".