276087949609 has 2 divisors, whose sum is σ = 276087949610. Its totient is φ = 276087949608.

The previous prime is 276087949603. The next prime is 276087949619. The reversal of 276087949609 is 906949780672.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 148641091600 + 127446858009 = 385540^2 + 356997^2 .

It is a cyclic number.

It is not a de Polignac number, because 276087949609 - 2⁷ = 276087949481 is a prime.

It is not a weakly prime, because it can be changed into another prime (276087949603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 138043974804 + 138043974805.

It is an arithmetic number, because the mean of its divisors is an integer number (138043974805).

Almost surely, 2^276087949609 is an apocalyptic number.

It is an amenable number.

276087949609 is a deficient number, since it is larger than the sum of its proper divisors (1).

276087949609 is an equidigital number, since it uses as much as digits as its factorization.

276087949609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 82301184, while the sum is 67.

The spelling of 276087949609 in words is "two hundred seventy-six billion, eighty-seven million, nine hundred forty-nine thousand, six hundred nine".