164421061452642 has 32 divisors (see below), whose sum is σ = 328880555674560. Its totient is φ = 54800615439360.

The previous prime is 164421061452559. The next prime is 164421061452643. The reversal of 164421061452642 is 246254160124461.

It is a super-3 number, since 3×164421061452642³ (a number of 44 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 164421061452591 and 164421061452600.

It is not an unprimeable number, because it can be changed into a prime (164421061452643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2988957234 + ... + 2989012242.

It is an arithmetic number, because the mean of its divisors is an integer number (10277517364830).

Almost surely, 2^{164421061452642} is an apocalyptic number.

164421061452642 is an abundant number, since it is smaller than the sum of its proper divisors (164459494221918).

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

164421061452642 is a wasteful number, since it uses less digits than its factorization.

164421061452642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104178.

The product of its (nonzero) digits is 2211840, while the sum is 48.

The spelling of 164421061452642 in words is "one hundred sixty-four trillion, four hundred twenty-one billion, sixty-one million, four hundred fifty-two thousand, six hundred forty-two".