6555996481 has 2 divisors, whose sum is σ = 6555996482. Its totient is φ = 6555996480.

The previous prime is 6555996449. The next prime is 6555996539. The reversal of 6555996481 is 1846995556.

It is the 33056-th star number.

It is an a-pointer prime, because the next prime (6555996539) can be obtained adding 6555996481 to its sum of digits (58).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4178458881 + 2377537600 = 64641^2 + 48760^2 .

It is a cyclic number.

It is not a de Polignac number, because 6555996481 - 2⁵ = 6555996449 is a prime.

It is a super-2 number, since 2×6555996481² = 85962179717768766722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (6555996581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3277998240 + 3277998241.

It is an arithmetic number, because the mean of its divisors is an integer number (3277998241).

Almost surely, 2^6555996481 is an apocalyptic number.

It is an amenable number.

6555996481 is a deficient number, since it is larger than the sum of its proper divisors (1).

6555996481 is an equidigital number, since it uses as much as digits as its factorization.

6555996481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11664000, while the sum is 58.

The square root of 6555996481 is about 80969.1081894817. The cubic root of 6555996481 is about 1871.5994285953.

The spelling of 6555996481 in words is "six billion, five hundred fifty-five million, nine hundred ninety-six thousand, four hundred eighty-one".