2116565050621 has 8 divisors (see below), whose sum is σ = 2546243670080. Its totient is φ = 1718714477088.

The previous prime is 2116565050559. The next prime is 2116565050627. The reversal of 2116565050621 is 1260505656112.

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

It is not a de Polignac number, because 2116565050621 - 2²³ = 2116556662013 is a prime.

It is a super-2 number, since 2×2116565050621² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2116565050627) 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, 7957011336 + ... + 7957011601.

It is an arithmetic number, because the mean of its divisors is an integer number (318280458760).

Almost surely, 2^{2116565050621} is an apocalyptic number.

It is an amenable number.

2116565050621 is a deficient number, since it is larger than the sum of its proper divisors (429678619459).

2116565050621 is a wasteful number, since it uses less digits than its factorization.

2116565050621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15914022963.

The product of its (nonzero) digits is 108000, while the sum is 40.

The spelling of 2116565050621 in words is "two trillion, one hundred sixteen billion, five hundred sixty-five million, fifty thousand, six hundred twenty-one".