2563983977 has 2 divisors, whose sum is σ = 2563983978. Its totient is φ = 2563983976.

The previous prime is 2563983943. The next prime is 2563984019. The reversal of 2563983977 is 7793893652.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1679278441 + 884705536 = 40979^2 + 29744^2 .

It is a cyclic number.

It is not a de Polignac number, because 2563983977 - 2³⁰ = 1490242153 is a prime.

It is not a weakly prime, because it can be changed into another prime (2563983077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1281991988 + 1281991989.

It is an arithmetic number, because the mean of its divisors is an integer number (1281991989).

Almost surely, 2^2563983977 is an apocalyptic number.

It is an amenable number.

2563983977 is a deficient number, since it is larger than the sum of its proper divisors (1).

2563983977 is an equidigital number, since it uses as much as digits as its factorization.

2563983977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17146080, while the sum is 59.

The square root of 2563983977 is about 50635.7973868290. The cubic root of 2563983977 is about 1368.6900254588.

The spelling of 2563983977 in words is "two billion, five hundred sixty-three million, nine hundred eighty-three thousand, nine hundred seventy-seven".