6556773983 has 2 divisors, whose sum is σ = 6556773984. Its totient is φ = 6556773982.

The previous prime is 6556773953. The next prime is 6556774019. The reversal of 6556773983 is 3893776556.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6556773983 - 2⁶ = 6556773919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6556773943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3278386991 + 3278386992.

It is an arithmetic number, because the mean of its divisors is an integer number (3278386992).

Almost surely, 2^6556773983 is an apocalyptic number.

6556773983 is a deficient number, since it is larger than the sum of its proper divisors (1).

6556773983 is an equidigital number, since it uses as much as digits as its factorization.

6556773983 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28576800, while the sum is 59.

The square root of 6556773983 is about 80973.9092732962. The cubic root of 6556773983 is about 1871.6734125061.

The spelling of 6556773983 in words is "six billion, five hundred fifty-six million, seven hundred seventy-three thousand, nine hundred eighty-three".