123682054821 has 16 divisors (see below), whose sum is σ = 177615466560. Its totient is φ = 76103153280.

The previous prime is 123682054787. The next prime is 123682054823. The reversal of 123682054821 is 128450286321.

It is not a de Polignac number, because 123682054821 - 2⁶ = 123682054757 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123682054823) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 161761 + ... + 523001.

It is an arithmetic number, because the mean of its divisors is an integer number (11100966660).

Almost surely, 2^123682054821 is an apocalyptic number.

It is an amenable number.

123682054821 is a deficient number, since it is larger than the sum of its proper divisors (53933411739).

123682054821 is a wasteful number, since it uses less digits than its factorization.

123682054821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370036.

The product of its (nonzero) digits is 184320, while the sum is 42.

The spelling of 123682054821 in words is "one hundred twenty-three billion, six hundred eighty-two million, fifty-four thousand, eight hundred twenty-one".