123532155216 has 200 divisors, whose sum is σ = 369264044160. Its totient is φ = 39846698496.

The previous prime is 123532155203. The next prime is 123532155221. The reversal of 123532155216 is 612551235321.

123532155216 is a `hidden beast` number, since 1 + 23 + 53 + 21 + 552 + 16 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 5409775 + ... + 5432561.

Almost surely, 2^123532155216 is an apocalyptic number.

123532155216 is a gapful number since it is divisible by the number (16) 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 123532155216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (184632022080).

123532155216 is an abundant number, since it is smaller than the sum of its proper divisors (245731888944).

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

123532155216 is a wasteful number, since it uses less digits than its factorization.

123532155216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22943 (or 22928 counting only the distinct ones).

The product of its digits is 54000, while the sum is 36.

The spelling of 123532155216 in words is "one hundred twenty-three billion, five hundred thirty-two million, one hundred fifty-five thousand, two hundred sixteen".