164226440440 has 32 divisors (see below), whose sum is σ = 369544680000. Its totient is φ = 65684320384.

The previous prime is 164226440423. The next prime is 164226440513. The reversal of 164226440440 is 44044622461.

164226440440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 164226440440.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 241866 + ... + 622054.

It is an arithmetic number, because the mean of its divisors is an integer number (11548271250).

Almost surely, 2^164226440440 is an apocalyptic number.

164226440440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

164226440440 is an abundant number, since it is smaller than the sum of its proper divisors (205318239560).

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

164226440440 is a wasteful number, since it uses less digits than its factorization.

164226440440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390999 (or 390995 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 37.

The spelling of 164226440440 in words is "one hundred sixty-four billion, two hundred twenty-six million, four hundred forty thousand, four hundred forty".