164770991333 has 4 divisors (see below), whose sum is σ = 177445682988. Its totient is φ = 152096299680.

The previous prime is 164770991327. The next prime is 164770991377. The reversal of 164770991333 is 333199077461.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14427132769 + 150343858564 = 120113^2 + 387742^2 .

It is not a de Polignac number, because 164770991333 - 2¹⁰ = 164770990309 is a prime.

It is a super-2 number, since 2×164770991333² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164770991323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6337345808 + ... + 6337345833.

It is an arithmetic number, because the mean of its divisors is an integer number (44361420747).

Almost surely, 2^164770991333 is an apocalyptic number.

164770991333 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

164770991333 is a deficient number, since it is larger than the sum of its proper divisors (12674691655).

164770991333 is a wasteful number, since it uses less digits than its factorization.

164770991333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12674691654.

The product of its (nonzero) digits is 2571912, while the sum is 53.

The spelling of 164770991333 in words is "one hundred sixty-four billion, seven hundred seventy million, nine hundred ninety-one thousand, three hundred thirty-three".