123173864632 has 128 divisors (see below), whose sum is σ = 296446832640. Its totient is φ = 46669271040.

The previous prime is 123173864587. The next prime is 123173864669. The reversal of 123173864632 is 236468371321.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2160963 + ... + 2217229.

It is an arithmetic number, because the mean of its divisors is an integer number (2315990880).

Almost surely, 2^123173864632 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123173864632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (148223416320).

123173864632 is an abundant number, since it is smaller than the sum of its proper divisors (173272968008).

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

123173864632 is a wasteful number, since it uses less digits than its factorization.

123173864632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56421 (or 56417 counting only the distinct ones).

The product of its digits is 870912, while the sum is 46.

The spelling of 123173864632 in words is "one hundred twenty-three billion, one hundred seventy-three million, eight hundred sixty-four thousand, six hundred thirty-two".