73635674267809 has 2 divisors, whose sum is σ = 73635674267810. Its totient is φ = 73635674267808.

The previous prime is 73635674267807. The next prime is 73635674267843. The reversal of 73635674267809 is 90876247653637.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48231080419600 + 25404593848209 = 6944860^2 + 5040297^2 .

It is a cyclic number.

It is not a de Polignac number, because 73635674267809 - 2¹ = 73635674267807 is a prime.

Together with 73635674267807, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (73635674267807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36817837133904 + 36817837133905.

It is an arithmetic number, because the mean of its divisors is an integer number (36817837133905).

Almost surely, 2^{73635674267809} is an apocalyptic number.

It is an amenable number.

73635674267809 is a deficient number, since it is larger than the sum of its proper divisors (1).

73635674267809 is an equidigital number, since it uses as much as digits as its factorization.

73635674267809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1920360960, while the sum is 73.

The spelling of 73635674267809 in words is "seventy-three trillion, six hundred thirty-five billion, six hundred seventy-four million, two hundred sixty-seven thousand, eight hundred nine".