16643102620 has 12 divisors (see below), whose sum is σ = 34950515544. Its totient is φ = 6657241040.

The previous prime is 16643102603. The next prime is 16643102621. The reversal of 16643102620 is 2620134661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16643102621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 416077546 + ... + 416077585.

It is an arithmetic number, because the mean of its divisors is an integer number (2912542962).

Almost surely, 2^16643102620 is an apocalyptic number.

16643102620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16643102620 is an abundant number, since it is smaller than the sum of its proper divisors (18307412924).

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

16643102620 is a wasteful number, since it uses less digits than its factorization.

16643102620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 832155140 (or 832155138 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

The spelling of 16643102620 in words is "sixteen billion, six hundred forty-three million, one hundred two thousand, six hundred twenty".