2156116471 has 2 divisors, whose sum is σ = 2156116472. Its totient is φ = 2156116470.

The previous prime is 2156116451. The next prime is 2156116483. The reversal of 2156116471 is 1746116512.

2156116471 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2156116471 - 2²¹ = 2154019319 is a prime.

It is a super-3 number, since 3×2156116471³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2156116411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1078058235 + 1078058236.

It is an arithmetic number, because the mean of its divisors is an integer number (1078058236).

Almost surely, 2^2156116471 is an apocalyptic number.

2156116471 is a deficient number, since it is larger than the sum of its proper divisors (1).

2156116471 is an equidigital number, since it uses as much as digits as its factorization.

2156116471 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10080, while the sum is 34.

The square root of 2156116471 is about 46434.0012383167. The cubic root of 2156116471 is about 1291.8856446742.

The spelling of 2156116471 in words is "two billion, one hundred fifty-six million, one hundred sixteen thousand, four hundred seventy-one".