2116455557 has 2 divisors, whose sum is σ = 2116455558. Its totient is φ = 2116455556.

The previous prime is 2116455533. The next prime is 2116455569. The reversal of 2116455557 is 7555546112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1117832356 + 998623201 = 33434^2 + 31601^2 .

It is a cyclic number.

It is not a de Polignac number, because 2116455557 - 2¹⁶ = 2116390021 is a prime.

It is a super-3 number, since 3×2116455557³ (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 (2116455577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1058227778 + 1058227779.

It is an arithmetic number, because the mean of its divisors is an integer number (1058227779).

Almost surely, 2^2116455557 is an apocalyptic number.

It is an amenable number.

2116455557 is a deficient number, since it is larger than the sum of its proper divisors (1).

2116455557 is an equidigital number, since it uses as much as digits as its factorization.

2116455557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 210000, while the sum is 41.

The square root of 2116455557 is about 46004.9514400352. The cubic root of 2116455557 is about 1283.9153301003.

The spelling of 2116455557 in words is "two billion, one hundred sixteen million, four hundred fifty-five thousand, five hundred fifty-seven".