2116162557601 has 4 divisors (see below), whose sum is σ = 2116211771412. Its totient is φ = 2116113343792.

The previous prime is 2116162557589. The next prime is 2116162557647. The reversal of 2116162557601 is 1067552616112.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 95727741201 + 2020434816400 = 309399^2 + 1421420^2 .

It is a cyclic number.

It is not a de Polignac number, because 2116162557601 - 2¹³ = 2116162549409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2116162557001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24542350 + ... + 24628423.

It is an arithmetic number, because the mean of its divisors is an integer number (529052942853).

Almost surely, 2^{2116162557601} is an apocalyptic number.

It is an amenable number.

2116162557601 is a deficient number, since it is larger than the sum of its proper divisors (49213811).

2116162557601 is an equidigital number, since it uses as much as digits as its factorization.

2116162557601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49213810.

The product of its (nonzero) digits is 151200, while the sum is 43.

The spelling of 2116162557601 in words is "two trillion, one hundred sixteen billion, one hundred sixty-two million, five hundred fifty-seven thousand, six hundred one".