164391787011 has 8 divisors (see below), whose sum is σ = 219817099600. Its totient is φ = 109280499552.

The previous prime is 164391787003. The next prime is 164391787033. The reversal of 164391787011 is 110787193461.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 164391787011 - 2³ = 164391787003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164391787411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78505060 + ... + 78507153.

It is an arithmetic number, because the mean of its divisors is an integer number (27477137450).

Almost surely, 2^164391787011 is an apocalyptic number.

164391787011 is a deficient number, since it is larger than the sum of its proper divisors (55425312589).

164391787011 is a wasteful number, since it uses less digits than its factorization.

164391787011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157012565.

The product of its (nonzero) digits is 254016, while the sum is 48.

The spelling of 164391787011 in words is "one hundred sixty-four billion, three hundred ninety-one million, seven hundred eighty-seven thousand, eleven".