9557559923 has 2 divisors, whose sum is σ = 9557559924. Its totient is φ = 9557559922.

The previous prime is 9557559883. The next prime is 9557559929. The reversal of 9557559923 is 3299557559.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9557559923 - 2¹² = 9557555827 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (9557559929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4778779961 + 4778779962.

It is an arithmetic number, because the mean of its divisors is an integer number (4778779962).

Almost surely, 2^9557559923 is an apocalyptic number.

9557559923 is a deficient number, since it is larger than the sum of its proper divisors (1).

9557559923 is an equidigital number, since it uses as much as digits as its factorization.

9557559923 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19136250, while the sum is 59.

The square root of 9557559923 is about 97762.7737075826. The cubic root of 9557559923 is about 2122.1806151586.

The spelling of 9557559923 in words is "nine billion, five hundred fifty-seven million, five hundred fifty-nine thousand, nine hundred twenty-three".