2487661999 has 2 divisors, whose sum is σ = 2487662000. Its totient is φ = 2487661998.

The previous prime is 2487661993. The next prime is 2487662041. The reversal of 2487661999 is 9991667842.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2487661999 - 2⁹ = 2487661487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2487661993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1243830999 + 1243831000.

It is an arithmetic number, because the mean of its divisors is an integer number (1243831000).

Almost surely, 2^2487661999 is an apocalyptic number.

2487661999 is a deficient number, since it is larger than the sum of its proper divisors (1).

2487661999 is an equidigital number, since it uses as much as digits as its factorization.

2487661999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11757312, while the sum is 61.

The square root of 2487661999 is about 49876.4673869351. The cubic root of 2487661999 is about 1354.9724261034.

The spelling of 2487661999 in words is "two billion, four hundred eighty-seven million, six hundred sixty-one thousand, nine hundred ninety-nine".