161345628000 has 384 divisors, whose sum is σ = 589684717440. Its totient is φ = 42850713600.

The previous prime is 161345627957. The next prime is 161345628011. The reversal of 161345628000 is 826543161.

It is a happy number.

161345628000 is a `hidden beast` number, since 1 + 6 + 13 + 4 + 562 + 80 + 0 + 0 = 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 63 ways as a sum of consecutive naturals, for example, 27753094 + ... + 27758906.

It is an arithmetic number, because the mean of its divisors is an integer number (1535637285).

Almost surely, 2^161345628000 is an apocalyptic number.

161345628000 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 161345628000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (294842358720).

161345628000 is an abundant number, since it is smaller than the sum of its proper divisors (428339089440).

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

161345628000 is a wasteful number, since it uses less digits than its factorization.

161345628000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6104 (or 6080 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The spelling of 161345628000 in words is "one hundred sixty-one billion, three hundred forty-five million, six hundred twenty-eight thousand".