164537443134220 has 24 divisors (see below), whose sum is σ = 372107756011824. Its totient is φ = 60752286695616.

The previous prime is 164537443134179. The next prime is 164537443134263. The reversal of 164537443134220 is 22431344735461.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 316418159614 + ... + 316418160133.

It is an arithmetic number, because the mean of its divisors is an integer number (15504489833826).

Almost surely, 2^{164537443134220} is an apocalyptic number.

164537443134220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

164537443134220 is an abundant number, since it is smaller than the sum of its proper divisors (207570312877604).

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

164537443134220 is a wasteful number, since it uses less digits than its factorization.

164537443134220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 632836319769 (or 632836319767 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 49.

Adding to 164537443134220 its reverse (22431344735461), we get a palindrome (186968787869681).

The spelling of 164537443134220 in words is "one hundred sixty-four trillion, five hundred thirty-seven billion, four hundred forty-three million, one hundred thirty-four thousand, two hundred twenty".