646952525373 has 32 divisors (see below), whose sum is σ = 1075494205440. Its totient is φ = 336066528960.

The previous prime is 646952525363. The next prime is 646952525413. The reversal of 646952525373 is 373525259646.

It is a happy number.

It is not a de Polignac number, because 646952525373 - 2⁹ = 646952524861 is a prime.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (646952525333) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11894083 + ... + 11948351.

It is an arithmetic number, because the mean of its divisors is an integer number (33609193920).

Almost surely, 2^646952525373 is an apocalyptic number.

It is an amenable number.

646952525373 is a deficient number, since it is larger than the sum of its proper divisors (428541680067).

646952525373 is a wasteful number, since it uses less digits than its factorization.

646952525373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105897.

The product of its digits is 40824000, while the sum is 57.

The spelling of 646952525373 in words is "six hundred forty-six billion, nine hundred fifty-two million, five hundred twenty-five thousand, three hundred seventy-three".