1667653260101 has 4 divisors (see below), whose sum is σ = 1670854130604. Its totient is φ = 1664452389600.

The previous prime is 1667653260071. The next prime is 1667653260107. The reversal of 1667653260101 is 1010623567661.

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 230951369476 + 1436701890625 = 480574^2 + 1198625^2 .

It is a cyclic number.

It is not a de Polignac number, because 1667653260101 - 2³⁰ = 1666579518277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1667653260107) 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, 1600434470 + ... + 1600435511.

It is an arithmetic number, because the mean of its divisors is an integer number (417713532651).

Almost surely, 2^{1667653260101} is an apocalyptic number.

It is an amenable number.

1667653260101 is a deficient number, since it is larger than the sum of its proper divisors (3200870503).

1667653260101 is an equidigital number, since it uses as much as digits as its factorization.

1667653260101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3200870502.

The product of its (nonzero) digits is 272160, while the sum is 44.

The spelling of 1667653260101 in words is "one trillion, six hundred sixty-seven billion, six hundred fifty-three million, two hundred sixty thousand, one hundred one".