165046261001 has 4 divisors (see below), whose sum is σ = 169071779604. Its totient is φ = 161020742400.

The previous prime is 165046260959. The next prime is 165046261007. The reversal of 165046261001 is 100162640561.

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 16435240000 + 148611021001 = 128200^2 + 385501^2 .

It is a cyclic number.

It is not a de Polignac number, because 165046261001 - 2²⁶ = 164979152137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165046261007) 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, 2012759240 + ... + 2012759321.

It is an arithmetic number, because the mean of its divisors is an integer number (42267944901).

Almost surely, 2^165046261001 is an apocalyptic number.

It is an amenable number.

165046261001 is a deficient number, since it is larger than the sum of its proper divisors (4025518603).

165046261001 is an equidigital number, since it uses as much as digits as its factorization.

165046261001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4025518602.

The product of its (nonzero) digits is 8640, while the sum is 32.

The spelling of 165046261001 in words is "one hundred sixty-five billion, forty-six million, two hundred sixty-one thousand, one".