2665263145161 has 8 divisors (see below), whose sum is σ = 3560749174080. Its totient is φ = 1773309606512.

The previous prime is 2665263145081. The next prime is 2665263145169. The reversal of 2665263145161 is 1615413625662.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2665263145161 - 2⁷ = 2665263145033 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2665263145161.

It is not an unprimeable number, because it can be changed into a prime (2665263145169) 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, 883120806 + ... + 883123823.

It is an arithmetic number, because the mean of its divisors is an integer number (445093646760).

Almost surely, 2^{2665263145161} is an apocalyptic number.

It is an amenable number.

2665263145161 is a deficient number, since it is larger than the sum of its proper divisors (895486028919).

2665263145161 is a wasteful number, since it uses less digits than its factorization.

2665263145161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1766245135.

The product of its digits is 1555200, while the sum is 48.

The spelling of 2665263145161 in words is "two trillion, six hundred sixty-five billion, two hundred sixty-three million, one hundred forty-five thousand, one hundred sixty-one".