6620167011660 has 96 divisors (see below), whose sum is σ = 18845314697664. Its totient is φ = 1735979136000.

The previous prime is 6620167011641. The next prime is 6620167011709. The reversal of 6620167011660 is 661107610266.

It is a happy number.

It is a super-2 number, since 2×6620167011660² (a number of 26 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13748170 + ... + 14221550.

It is an arithmetic number, because the mean of its divisors is an integer number (196305361434).

Almost surely, 2^{6620167011660} is an apocalyptic number.

6620167011660 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6620167011660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9422657348832).

6620167011660 is an abundant number, since it is smaller than the sum of its proper divisors (12225147686004).

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

6620167011660 is a wasteful number, since it uses less digits than its factorization.

6620167011660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 477275 (or 477273 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 42.

The spelling of 6620167011660 in words is "six trillion, six hundred twenty billion, one hundred sixty-seven million, eleven thousand, six hundred sixty".