646311045232 has 20 divisors (see below), whose sum is σ = 1281349224760. Its totient is φ = 315640277568.

The previous prime is 646311045227. The next prime is 646311045383. The reversal of 646311045232 is 232540113646.

646311045232 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 646311045191 and 646311045200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 469702107 + ... + 469703482.

It is an arithmetic number, because the mean of its divisors is an integer number (64067461238).

Almost surely, 2^646311045232 is an apocalyptic number.

It is an amenable number.

646311045232 is a deficient number, since it is larger than the sum of its proper divisors (635038179528).

646311045232 is a wasteful number, since it uses less digits than its factorization.

646311045232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 939405640 (or 939405634 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 37.

Adding to 646311045232 its reverse (232540113646), we get a palindrome (878851158878).

The spelling of 646311045232 in words is "six hundred forty-six billion, three hundred eleven million, forty-five thousand, two hundred thirty-two".