16634169620 has 12 divisors (see below), whose sum is σ = 34931756244. Its totient is φ = 6653667840.

The previous prime is 16634169613. The next prime is 16634169637. The reversal of 16634169620 is 2696143661.

It can be written as a sum of positive squares in 2 ways, for example, as 5775696004 + 10858473616 = 75998^2 + 104204^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 415854221 + ... + 415854260.

It is an arithmetic number, because the mean of its divisors is an integer number (2910979687).

Almost surely, 2^16634169620 is an apocalyptic number.

16634169620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16634169620 is an abundant number, since it is smaller than the sum of its proper divisors (18297586624).

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

16634169620 is a wasteful number, since it uses less digits than its factorization.

16634169620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 831708490 (or 831708488 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 44.

The spelling of 16634169620 in words is "sixteen billion, six hundred thirty-four million, one hundred sixty-nine thousand, six hundred twenty".