123947366401 has 4 divisors (see below), whose sum is σ = 131238387972. Its totient is φ = 116656344832.

The previous prime is 123947366369. The next prime is 123947366407. The reversal of 123947366401 is 104663749321.

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

It can be written as a sum of positive squares in 2 ways, for example, as 97968374001 + 25978992400 = 312999^2 + 161180^2 .

It is a cyclic number.

It is not a de Polignac number, because 123947366401 - 2⁵ = 123947366369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123947366407) 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 3 ways as a sum of consecutive naturals, for example, 3645510760 + ... + 3645510793.

It is an arithmetic number, because the mean of its divisors is an integer number (32809596993).

Almost surely, 2^123947366401 is an apocalyptic number.

It is an amenable number.

123947366401 is a deficient number, since it is larger than the sum of its proper divisors (7291021571).

123947366401 is an equidigital number, since it uses as much as digits as its factorization.

123947366401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7291021570.

The product of its (nonzero) digits is 653184, while the sum is 46.

The spelling of 123947366401 in words is "one hundred twenty-three billion, nine hundred forty-seven million, three hundred sixty-six thousand, four hundred one".