123203086986 has 96 divisors (see below), whose sum is σ = 290352057408. Its totient is φ = 34745276160.

The previous prime is 123203086973. The next prime is 123203086997. The reversal of 123203086986 is 689680302321.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 45410766 + ... + 45413478.

It is an arithmetic number, because the mean of its divisors is an integer number (3024500598).

Almost surely, 2^123203086986 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123203086986, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (145176028704).

123203086986 is an abundant number, since it is smaller than the sum of its proper divisors (167148970422).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123203086986 is a wasteful number, since it uses less digits than its factorization.

123203086986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4676 (or 4669 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 48.

The spelling of 123203086986 in words is "one hundred twenty-three billion, two hundred three million, eighty-six thousand, nine hundred eighty-six".