123338780654 has 4 divisors (see below), whose sum is σ = 185008170984. Its totient is φ = 61669390326.

The previous prime is 123338780597. The next prime is 123338780689. The reversal of 123338780654 is 456087833321.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30834695162 + ... + 30834695165.

It is an arithmetic number, because the mean of its divisors is an integer number (46252042746).

Almost surely, 2^123338780654 is an apocalyptic number.

123338780654 is a deficient number, since it is larger than the sum of its proper divisors (61669390330).

123338780654 is an equidigital number, since it uses as much as digits as its factorization.

123338780654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61669390329.

The product of its (nonzero) digits is 2903040, while the sum is 50.

The spelling of 123338780654 in words is "one hundred twenty-three billion, three hundred thirty-eight million, seven hundred eighty thousand, six hundred fifty-four".