20074324561 has 2 divisors, whose sum is σ = 20074324562. Its totient is φ = 20074324560.

The previous prime is 20074324553. The next prime is 20074324579. The reversal of 20074324561 is 16542347002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17045913600 + 3028410961 = 130560^2 + 55031^2 .

It is a cyclic number.

It is not a de Polignac number, because 20074324561 - 2³ = 20074324553 is a prime.

It is not a weakly prime, because it can be changed into another prime (20074324661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10037162280 + 10037162281.

It is an arithmetic number, because the mean of its divisors is an integer number (10037162281).

Almost surely, 2^20074324561 is an apocalyptic number.

It is an amenable number.

20074324561 is a deficient number, since it is larger than the sum of its proper divisors (1).

20074324561 is an equidigital number, since it uses as much as digits as its factorization.

20074324561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40320, while the sum is 34.

The spelling of 20074324561 in words is "twenty billion, seventy-four million, three hundred twenty-four thousand, five hundred sixty-one".