123638607047 has 8 divisors (see below), whose sum is σ = 127958001600. Its totient is φ = 119322945504.

The previous prime is 123638607031. The next prime is 123638607073. The reversal of 123638607047 is 740706836321.

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

It is a cyclic number.

It is not a de Polignac number, because 123638607047 - 2⁴ = 123638607031 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123638606992 and 123638607010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123638603047) 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, 865772 + ... + 998417.

It is an arithmetic number, because the mean of its divisors is an integer number (15994750200).

Almost surely, 2^123638607047 is an apocalyptic number.

123638607047 is a deficient number, since it is larger than the sum of its proper divisors (4319394553).

123638607047 is a wasteful number, since it uses less digits than its factorization.

123638607047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1866505.

The product of its (nonzero) digits is 1016064, while the sum is 47.

The spelling of 123638607047 in words is "one hundred twenty-three billion, six hundred thirty-eight million, six hundred seven thousand, forty-seven".