2070916561 has 8 divisors (see below), whose sum is σ = 2373787520. Its totient is φ = 1769802048.

The previous prime is 2070916559. The next prime is 2070916583. The reversal of 2070916561 is 1656190702.

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

It is not a de Polignac number, because 2070916561 - 2¹ = 2070916559 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2070916561.

It is not an unprimeable number, because it can be changed into a prime (2070916501) 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, 436581 + ... + 441298.

It is an arithmetic number, because the mean of its divisors is an integer number (296723440).

Almost surely, 2^2070916561 is an apocalyptic number.

It is an amenable number.

2070916561 is a deficient number, since it is larger than the sum of its proper divisors (302870959).

2070916561 is an equidigital number, since it uses as much as digits as its factorization.

2070916561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 878223.

The product of its (nonzero) digits is 22680, while the sum is 37.

The square root of 2070916561 is about 45507.3242566513. The cubic root of 2070916561 is about 1274.6399723697.

The spelling of 2070916561 in words is "two billion, seventy million, nine hundred sixteen thousand, five hundred sixty-one".