73974847909 has 2 divisors, whose sum is σ = 73974847910. Its totient is φ = 73974847908.

The previous prime is 73974847907. The next prime is 73974847967. The reversal of 73974847909 is 90974847937.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40541822500 + 33433025409 = 201350^2 + 182847^2 .

It is a cyclic number.

It is not a de Polignac number, because 73974847909 - 2¹ = 73974847907 is a prime.

Together with 73974847907, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73974847901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36987423954 + 36987423955.

It is an arithmetic number, because the mean of its divisors is an integer number (36987423955).

Almost surely, 2^73974847909 is an apocalyptic number.

It is an amenable number.

73974847909 is a deficient number, since it is larger than the sum of its proper divisors (1).

73974847909 is an equidigital number, since it uses as much as digits as its factorization.

73974847909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96018048, while the sum is 67.

The spelling of 73974847909 in words is "seventy-three billion, nine hundred seventy-four million, eight hundred forty-seven thousand, nine hundred nine".