164055400520 has 64 divisors (see below), whose sum is σ = 405578577600. Its totient is φ = 59227303680.

The previous prime is 164055400517. The next prime is 164055400627. The reversal of 164055400520 is 25004550461.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1280039 + ... + 1402358.

It is an arithmetic number, because the mean of its divisors is an integer number (6337165275).

Almost surely, 2^164055400520 is an apocalyptic number.

164055400520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

164055400520 is an abundant number, since it is smaller than the sum of its proper divisors (241523177080).

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

164055400520 is a wasteful number, since it uses less digits than its factorization.

164055400520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2682558 (or 2682554 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 32.

Adding to 164055400520 its reverse (25004550461), we get a palindrome (189059950981).

The spelling of 164055400520 in words is "one hundred sixty-four billion, fifty-five million, four hundred thousand, five hundred twenty".