164568129210 has 96 divisors (see below), whose sum is σ = 439812002448. Its totient is φ = 42668067840.

The previous prime is 164568129203. The next prime is 164568129221. The reversal of 164568129210 is 12921865461.

164568129210 is a `hidden beast` number, since 1 + 64 + 568 + 1 + 2 + 9 + 21 + 0 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 26770522689 + 137797606521 = 163617^2 + 371211^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1005064 + ... + 1157276.

Almost surely, 2^164568129210 is an apocalyptic number.

164568129210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 164568129210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (219906001224).

164568129210 is an abundant number, since it is smaller than the sum of its proper divisors (275243873238).

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

164568129210 is a wasteful number, since it uses less digits than its factorization.

164568129210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152560 (or 152557 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The spelling of 164568129210 in words is "one hundred sixty-four billion, five hundred sixty-eight million, one hundred twenty-nine thousand, two hundred ten".