123447265547 has 8 divisors (see below), whose sum is σ = 124423343616. Its totient is φ = 122472274752.

The previous prime is 123447265493. The next prime is 123447265549. The reversal of 123447265547 is 745562744321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 123447265547 - 2⁶ = 123447265483 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123447265495 and 123447265504.

It is not an unprimeable number, because it can be changed into a prime (123447265549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43088 + ... + 498749.

It is an arithmetic number, because the mean of its divisors is an integer number (15552917952).

Almost surely, 2^123447265547 is an apocalyptic number.

123447265547 is a deficient number, since it is larger than the sum of its proper divisors (976078069).

123447265547 is a wasteful number, since it uses less digits than its factorization.

123447265547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 543637.

The product of its digits is 5644800, while the sum is 50.

The spelling of 123447265547 in words is "one hundred twenty-three billion, four hundred forty-seven million, two hundred sixty-five thousand, five hundred forty-seven".