164732919097 has 4 divisors (see below), whose sum is σ = 165373903476. Its totient is φ = 164091934720.

The previous prime is 164732919047. The next prime is 164732919107. The reversal of 164732919097 is 790919237461.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 790919237461 = 131 ⋅6037551431.

It can be written as a sum of positive squares in 2 ways, for example, as 154025636521 + 10707282576 = 392461^2 + 103476^2 .

It is a cyclic number.

It is not a de Polignac number, because 164732919097 - 2¹⁹ = 164732394809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164732919047) 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, 320491804 + ... + 320492317.

It is an arithmetic number, because the mean of its divisors is an integer number (41343475869).

Almost surely, 2^164732919097 is an apocalyptic number.

It is an amenable number.

164732919097 is a deficient number, since it is larger than the sum of its proper divisors (640984379).

164732919097 is an equidigital number, since it uses as much as digits as its factorization.

164732919097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 640984378.

The product of its (nonzero) digits is 5143824, while the sum is 58.

The spelling of 164732919097 in words is "one hundred sixty-four billion, seven hundred thirty-two million, nine hundred nineteen thousand, ninety-seven".