7020621456161 has 8 divisors (see below), whose sum is σ = 7050191853600. Its totient is φ = 6991063756000.

The previous prime is 7020621456157. The next prime is 7020621456217. The reversal of 7020621456161 is 1616541260207.

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 7020621456161 - 2² = 7020621456157 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7020621456661) 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, 2065331 + ... + 4278648.

It is an arithmetic number, because the mean of its divisors is an integer number (881273981700).

Almost surely, 2^{7020621456161} is an apocalyptic number.

It is an amenable number.

7020621456161 is a deficient number, since it is larger than the sum of its proper divisors (29570397439).

7020621456161 is a wasteful number, since it uses less digits than its factorization.

7020621456161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6348639.

The product of its (nonzero) digits is 120960, while the sum is 41.

The spelling of 7020621456161 in words is "seven trillion, twenty billion, six hundred twenty-one million, four hundred fifty-six thousand, one hundred sixty-one".