123898444231680 has 704 divisors, whose sum is σ = 456984136224000. Its totient is φ = 31796063502336.

The previous prime is 123898444231649. The next prime is 123898444231811. The reversal of 123898444231680 is 86132444898321.

123898444231680 is a `hidden beast` number, since 1 + 2 + 3 + 8 + 9 + 8 + 44 + 423 + 168 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1230700386 + ... + 1230801054.

It is an arithmetic number, because the mean of its divisors is an integer number (649125193500).

Almost surely, 2^{123898444231680} is an apocalyptic number.

123898444231680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123898444231680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (228492068112000).

123898444231680 is an abundant number, since it is smaller than the sum of its proper divisors (333085691992320).

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

123898444231680 is a wasteful number, since it uses less digits than its factorization.

123898444231680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101039 (or 101015 counting only the distinct ones).

The product of its (nonzero) digits is 63700992, while the sum is 63.

The spelling of 123898444231680 in words is "one hundred twenty-three trillion, eight hundred ninety-eight billion, four hundred forty-four million, two hundred thirty-one thousand, six hundred eighty".