55566596923 has 2 divisors, whose sum is σ = 55566596924. Its totient is φ = 55566596922.

The previous prime is 55566596887. The next prime is 55566596947. The reversal of 55566596923 is 32969566555.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55566596923 is a prime.

It is not a weakly prime, because it can be changed into another prime (55566596983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27783298461 + 27783298462.

It is an arithmetic number, because the mean of its divisors is an integer number (27783298462).

Almost surely, 2^55566596923 is an apocalyptic number.

55566596923 is a deficient number, since it is larger than the sum of its proper divisors (1).

55566596923 is an equidigital number, since it uses as much as digits as its factorization.

55566596923 is an evil number, because the sum of its binary digits is even.

The product of its digits is 65610000, while the sum is 61.

The spelling of 55566596923 in words is "fifty-five billion, five hundred sixty-six million, five hundred ninety-six thousand, nine hundred twenty-three".