761291622409 has 2 divisors, whose sum is σ = 761291622410. Its totient is φ = 761291622408.

The previous prime is 761291622389. The next prime is 761291622467. The reversal of 761291622409 is 904226192167.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 575431479184 + 185860143225 = 758572^2 + 431115^2 .

It is a cyclic number.

It is not a de Polignac number, because 761291622409 - 2⁷ = 761291622281 is a prime.

It is not a weakly prime, because it can be changed into another prime (761291622809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 380645811204 + 380645811205.

It is an arithmetic number, because the mean of its divisors is an integer number (380645811205).

Almost surely, 2^761291622409 is an apocalyptic number.

It is an amenable number.

761291622409 is a deficient number, since it is larger than the sum of its proper divisors (1).

761291622409 is an equidigital number, since it uses as much as digits as its factorization.

761291622409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 653184, while the sum is 49.

The spelling of 761291622409 in words is "seven hundred sixty-one billion, two hundred ninety-one million, six hundred twenty-two thousand, four hundred nine".