123746838621 has 8 divisors (see below), whose sum is σ = 188566611264. Its totient is φ = 70712479200.

The previous prime is 123746838601. The next prime is 123746838653. The reversal of 123746838621 is 126838647321.

It is a happy number.

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

It is not a de Polignac number, because 123746838621 - 2¹¹ = 123746836573 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123746838601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2946353280 + ... + 2946353321.

It is an arithmetic number, because the mean of its divisors is an integer number (23570826408).

Almost surely, 2^123746838621 is an apocalyptic number.

It is an amenable number.

123746838621 is a deficient number, since it is larger than the sum of its proper divisors (64819772643).

123746838621 is an equidigital number, since it uses as much as digits as its factorization.

123746838621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5892706611.

The product of its digits is 2322432, while the sum is 51.

The spelling of 123746838621 in words is "one hundred twenty-three billion, seven hundred forty-six million, eight hundred thirty-eight thousand, six hundred twenty-one".