123252867845 has 4 divisors (see below), whose sum is σ = 147903441420. Its totient is φ = 98602294272.

The previous prime is 123252867841. The next prime is 123252867863. The reversal of 123252867845 is 548768252321.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 57922530241 + 65330337604 = 240671^2 + 255598^2 .

It is a cyclic number.

It is not a de Polignac number, because 123252867845 - 2² = 123252867841 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123252867841) 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, 12325286780 + ... + 12325286789.

It is an arithmetic number, because the mean of its divisors is an integer number (36975860355).

Almost surely, 2^123252867845 is an apocalyptic number.

It is an amenable number.

123252867845 is a deficient number, since it is larger than the sum of its proper divisors (24650573575).

123252867845 is an equidigital number, since it uses as much as digits as its factorization.

123252867845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24650573574.

The product of its digits is 6451200, while the sum is 53.

The spelling of 123252867845 in words is "one hundred twenty-three billion, two hundred fifty-two million, eight hundred sixty-seven thousand, eight hundred forty-five".