245684747123 has 4 divisors (see below), whose sum is σ = 245685806040. Its totient is φ = 245683688208.

The previous prime is 245684747117. The next prime is 245684747129. The reversal of 245684747123 is 321747486542.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is an interprime number because it is at equal distance from previous prime (245684747117) and next prime (245684747129).

It is a cyclic number.

It is not a de Polignac number, because 245684747123 - 2²⁸ = 245416311667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245684747129) 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, 14453 + ... + 701126.

It is an arithmetic number, because the mean of its divisors is an integer number (61421451510).

Almost surely, 2^245684747123 is an apocalyptic number.

245684747123 is a deficient number, since it is larger than the sum of its proper divisors (1058917).

245684747123 is an equidigital number, since it uses as much as digits as its factorization.

245684747123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1058916.

The product of its digits is 9031680, while the sum is 53.

The spelling of 245684747123 in words is "two hundred forty-five billion, six hundred eighty-four million, seven hundred forty-seven thousand, one hundred twenty-three".