164345555550 has 48 divisors (see below), whose sum is σ = 444629434752. Its totient is φ = 39841346400.

The previous prime is 164345555471. The next prime is 164345555609. The reversal of 164345555550 is 55555543461.

It is a self number, because there is not a number n which added to its sum of digits gives 164345555550.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 49800034 + ... + 49803333.

It is an arithmetic number, because the mean of its divisors is an integer number (9263113224).

Almost surely, 2^164345555550 is an apocalyptic number.

164345555550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

164345555550 is an abundant number, since it is smaller than the sum of its proper divisors (280283879202).

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

164345555550 is a wasteful number, since it uses less digits than its factorization.

164345555550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99603393 (or 99603388 counting only the distinct ones).

The product of its (nonzero) digits is 4500000, while the sum is 48.

The spelling of 164345555550 in words is "one hundred sixty-four billion, three hundred forty-five million, five hundred fifty-five thousand, five hundred fifty".