2116161403 has 4 divisors (see below), whose sum is σ = 2116271880. Its totient is φ = 2116050928.

The previous prime is 2116161379. The next prime is 2116161427. The reversal of 2116161403 is 3041616112.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is an interprime number because it is at equal distance from previous prime (2116161379) and next prime (2116161427).

It is a cyclic number.

It is not a de Polignac number, because 2116161403 - 2¹³ = 2116153211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2116161493) 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, 18250 + ... + 67567.

It is an arithmetic number, because the mean of its divisors is an integer number (529067970).

Almost surely, 2^2116161403 is an apocalyptic number.

2116161403 is a deficient number, since it is larger than the sum of its proper divisors (110477).

2116161403 is an equidigital number, since it uses as much as digits as its factorization.

2116161403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110476.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 2116161403 is about 46001.7543469812. The cubic root of 2116161403 is about 1283.8558460057.

Adding to 2116161403 its reverse (3041616112), we get a palindrome (5157777515).

The spelling of 2116161403 in words is "two billion, one hundred sixteen million, one hundred sixty-one thousand, four hundred three".