123654545213 has 4 divisors (see below), whose sum is σ = 123656597568. Its totient is φ = 123652492860.

The previous prime is 123654545137. The next prime is 123654545239. The reversal of 123654545213 is 312545456321.

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 123654545213 - 2⁸ = 123654544957 is a prime.

It is a super-2 number, since 2×123654545213² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123654547213) 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, 932981 + ... + 1057242.

It is an arithmetic number, because the mean of its divisors is an integer number (30914149392).

Almost surely, 2^123654545213 is an apocalyptic number.

It is an amenable number.

123654545213 is a deficient number, since it is larger than the sum of its proper divisors (2052355).

123654545213 is an equidigital number, since it uses as much as digits as its factorization.

123654545213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2052354.

The product of its digits is 432000, while the sum is 41.

The spelling of 123654545213 in words is "one hundred twenty-three billion, six hundred fifty-four million, five hundred forty-five thousand, two hundred thirteen".