646365605033351 has 24 divisors (see below), whose sum is σ = 770292062549856. Its totient is φ = 540473749966080.

The previous prime is 646365605033339. The next prime is 646365605033399. The reversal of 646365605033351 is 153330506563646.

It is a de Polignac number, because none of the positive numbers 2^k-646365605033351 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (646365605033321) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14264390 + ... + 38680796.

It is an arithmetic number, because the mean of its divisors is an integer number (32095502606244).

Almost surely, 2^{646365605033351} is an apocalyptic number.

646365605033351 is a deficient number, since it is larger than the sum of its proper divisors (123926457516505).

646365605033351 is a wasteful number, since it uses less digits than its factorization.

646365605033351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24429639 (or 24429632 counting only the distinct ones).

The product of its (nonzero) digits is 52488000, while the sum is 56.

The spelling of 646365605033351 in words is "six hundred forty-six trillion, three hundred sixty-five billion, six hundred five million, thirty-three thousand, three hundred fifty-one".