646232151620 has 24 divisors (see below), whose sum is σ = 1480459111488. Its totient is φ = 234993509600.

The previous prime is 646232151619. The next prime is 646232151629. The reversal of 646232151620 is 26151232646.

It is not an unprimeable number, because it can be changed into a prime (646232151629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1468709216 + ... + 1468709655.

It is an arithmetic number, because the mean of its divisors is an integer number (61685796312).

Almost surely, 2^646232151620 is an apocalyptic number.

It is an amenable number.

646232151620 is an abundant number, since it is smaller than the sum of its proper divisors (834226959868).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

646232151620 is a wasteful number, since it uses less digits than its factorization.

646232151620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2937418891 (or 2937418889 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 38.

The spelling of 646232151620 in words is "six hundred forty-six billion, two hundred thirty-two million, one hundred fifty-one thousand, six hundred twenty".