646264046265 has 64 divisors (see below), whose sum is σ = 1065451587840. Its totient is φ = 334261002240.

The previous prime is 646264046251. The next prime is 646264046291. The reversal of 646264046265 is 562640462646.

646264046265 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 646264046265 - 2⁹ = 646264045753 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 299056785 + ... + 299058945.

It is an arithmetic number, because the mean of its divisors is an integer number (16647681060).

Almost surely, 2^646264046265 is an apocalyptic number.

It is an amenable number.

646264046265 is a deficient number, since it is larger than the sum of its proper divisors (419187541575).

646264046265 is a wasteful number, since it uses less digits than its factorization.

646264046265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3722.

The product of its (nonzero) digits is 9953280, while the sum is 51.

The spelling of 646264046265 in words is "six hundred forty-six billion, two hundred sixty-four million, forty-six thousand, two hundred sixty-five".