2006521016 has 64 divisors (see below), whose sum is σ = 4061988000. Its totient is φ = 925831168.

The previous prime is 2006521003. The next prime is 2006521019. The reversal of 2006521016 is 6101256002.

It is a super-2 number, since 2×2006521016² = 8052253175299344512, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2006520982 and 2006521000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2006521019) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1681316 + ... + 1682508.

Almost surely, 2^2006521016 is an apocalyptic number.

It is an amenable number.

2006521016 is an abundant number, since it is smaller than the sum of its proper divisors (2055466984).

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

2006521016 is a wasteful number, since it uses less digits than its factorization.

2006521016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1448 (or 1444 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 2006521016 is about 44794.2073933673. The cubic root of 2006521016 is about 1261.2888919045.

Adding to 2006521016 its reverse (6101256002), we get a palindrome (8107777018).

The spelling of 2006521016 in words is "two billion, six million, five hundred twenty-one thousand, sixteen".