6021650661021 has 24 divisors (see below), whose sum is σ = 9196059805920. Its totient is φ = 3786393806496.

The previous prime is 6021650661017. The next prime is 6021650661029. The reversal of 6021650661021 is 1201660561206.

6021650661021 is a `hidden beast` number, since 6 + 0 + 2 + 16 + 5 + 0 + 6 + 610 + 21 = 666.

It is not a de Polignac number, because 6021650661021 - 2² = 6021650661017 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6021650661029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 77525790 + ... + 77603423.

It is an arithmetic number, because the mean of its divisors is an integer number (383169158580).

Almost surely, 2^{6021650661021} is an apocalyptic number.

It is an amenable number.

6021650661021 is a deficient number, since it is larger than the sum of its proper divisors (3174409144899).

6021650661021 is a wasteful number, since it uses less digits than its factorization.

6021650661021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155129465 (or 155129462 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The spelling of 6021650661021 in words is "six trillion, twenty-one billion, six hundred fifty million, six hundred sixty-one thousand, twenty-one".