164436891546 has 16 divisors (see below), whose sum is σ = 328965664608. Its totient is φ = 54796983600.

The previous prime is 164436891539. The next prime is 164436891569. The reversal of 164436891546 is 645198634461.

It is a super-3 number, since 3×164436891546³ (a number of 35 digits) contains 333 as substring.

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, 3805120 + ... + 3848091.

It is an arithmetic number, because the mean of its divisors is an integer number (20560354038).

Almost surely, 2^164436891546 is an apocalyptic number.

164436891546 is an abundant number, since it is smaller than the sum of its proper divisors (164528773062).

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

164436891546 is a wasteful number, since it uses less digits than its factorization.

164436891546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7656797.

The product of its digits is 14929920, while the sum is 57.

The spelling of 164436891546 in words is "one hundred sixty-four billion, four hundred thirty-six million, eight hundred ninety-one thousand, five hundred forty-six".