123649805103 has 8 divisors (see below), whose sum is σ = 179854262016. Its totient is φ = 74939275800.

The previous prime is 123649805089. The next prime is 123649805137. The reversal of 123649805103 is 301508946321.

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

It is not a de Polignac number, because 123649805103 - 2⁴ = 123649805087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123649805003) 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, 1873481863 + ... + 1873481928.

It is an arithmetic number, because the mean of its divisors is an integer number (22481782752).

Almost surely, 2^123649805103 is an apocalyptic number.

123649805103 is a deficient number, since it is larger than the sum of its proper divisors (56204456913).

123649805103 is a wasteful number, since it uses less digits than its factorization.

123649805103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3746963805.

The product of its (nonzero) digits is 155520, while the sum is 42.

The spelling of 123649805103 in words is "one hundred twenty-three billion, six hundred forty-nine million, eight hundred five thousand, one hundred three".