123945580237 has 4 divisors (see below), whose sum is σ = 124142008096. Its totient is φ = 123749152380.

The previous prime is 123945580223. The next prime is 123945580243. The reversal of 123945580237 is 732085549321.

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.

It is a cyclic number.

It is not a de Polignac number, because 123945580237 - 2¹¹ = 123945578189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123945580637) 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, 98212983 + ... + 98214244.

It is an arithmetic number, because the mean of its divisors is an integer number (31035502024).

Almost surely, 2^123945580237 is an apocalyptic number.

It is an amenable number.

123945580237 is a deficient number, since it is larger than the sum of its proper divisors (196427859).

123945580237 is an equidigital number, since it uses as much as digits as its factorization.

123945580237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196427858.

The product of its (nonzero) digits is 1814400, while the sum is 49.

The spelling of 123945580237 in words is "one hundred twenty-three billion, nine hundred forty-five million, five hundred eighty thousand, two hundred thirty-seven".