161528211936 has 1152 divisors, whose sum is σ = 615795747840. Its totient is φ = 40525774848.

The previous prime is 161528211869. The next prime is 161528211937. The reversal of 161528211936 is 639112825161.

It is a happy number.

161528211936 is a `hidden beast` number, since 1 + 6 + 1 + 528 + 2 + 119 + 3 + 6 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 161528211891 and 161528211900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161528211937) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 2212715196 + ... + 2212715268.

It is an arithmetic number, because the mean of its divisors is an integer number (534544920).

Almost surely, 2^161528211936 is an apocalyptic number.

161528211936 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 161528211936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (307897873920).

161528211936 is an abundant number, since it is smaller than the sum of its proper divisors (454267535904).

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

161528211936 is a wasteful number, since it uses less digits than its factorization.

161528211936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230 (or 210 counting only the distinct ones).

The product of its digits is 155520, while the sum is 45.

The spelling of 161528211936 in words is "one hundred sixty-one billion, five hundred twenty-eight million, two hundred eleven thousand, nine hundred thirty-six".