123774752489 has 4 divisors (see below), whose sum is σ = 123941341056. Its totient is φ = 123608163924.

The previous prime is 123774752449. The next prime is 123774752533. The reversal of 123774752489 is 984257477321.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 984257477321 = 42709 ⋅23045669.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123774752489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123774752429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83293169 + ... + 83294654.

It is an arithmetic number, because the mean of its divisors is an integer number (30985335264).

Almost surely, 2^123774752489 is an apocalyptic number.

It is an amenable number.

123774752489 is a deficient number, since it is larger than the sum of its proper divisors (166588567).

123774752489 is an equidigital number, since it uses as much as digits as its factorization.

123774752489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166588566.

The product of its digits is 23708160, while the sum is 59.

The spelling of 123774752489 in words is "one hundred twenty-three billion, seven hundred seventy-four million, seven hundred fifty-two thousand, four hundred eighty-nine".