6620016156601 has 8 divisors (see below), whose sum is σ = 7130494759520. Its totient is φ = 6125743223712.

The previous prime is 6620016156529. The next prime is 6620016156643. The reversal of 6620016156601 is 1066516100266.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6620016156601 - 2⁷ = 6620016156473 is a prime.

It is a super-2 number, since 2×6620016156601² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6620016156661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4051416660 + ... + 4051418293.

It is an arithmetic number, because the mean of its divisors is an integer number (891311844940).

Almost surely, 2^{6620016156601} is an apocalyptic number.

It is an amenable number.

6620016156601 is a deficient number, since it is larger than the sum of its proper divisors (510478602919).

6620016156601 is a wasteful number, since it uses less digits than its factorization.

6620016156601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8102835015.

The product of its (nonzero) digits is 77760, while the sum is 40.

The spelling of 6620016156601 in words is "six trillion, six hundred twenty billion, sixteen million, one hundred fifty-six thousand, six hundred one".