55123430969 has 2 divisors, whose sum is σ = 55123430970. Its totient is φ = 55123430968.

The previous prime is 55123430963. The next prime is 55123430987. The reversal of 55123430969 is 96903432155.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50720444944 + 4402986025 = 225212^2 + 66355^2 .

It is a cyclic number.

It is not a de Polignac number, because 55123430969 - 2²⁴ = 55106653753 is a prime.

It is a super-2 number, since 2×55123430969² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (55123430963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27561715484 + 27561715485.

It is an arithmetic number, because the mean of its divisors is an integer number (27561715485).

Almost surely, 2^55123430969 is an apocalyptic number.

It is an amenable number.

55123430969 is a deficient number, since it is larger than the sum of its proper divisors (1).

55123430969 is an equidigital number, since it uses as much as digits as its factorization.

55123430969 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 874800, while the sum is 47.

The spelling of 55123430969 in words is "fifty-five billion, one hundred twenty-three million, four hundred thirty thousand, nine hundred sixty-nine".