123684687038 has 8 divisors (see below), whose sum is σ = 202393124280. Its totient is φ = 56220312280.

The previous prime is 123684687031. The next prime is 123684687067. The reversal of 123684687038 is 830786486321.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123684687031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2811015593 + ... + 2811015636.

It is an arithmetic number, because the mean of its divisors is an integer number (25299140535).

Almost surely, 2^123684687038 is an apocalyptic number.

123684687038 is a deficient number, since it is larger than the sum of its proper divisors (78708437242).

123684687038 is a wasteful number, since it uses less digits than its factorization.

123684687038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5622031242.

The product of its (nonzero) digits is 9289728, while the sum is 56.

The spelling of 123684687038 in words is "one hundred twenty-three billion, six hundred eighty-four million, six hundred eighty-seven thousand, thirty-eight".