265380166043 has 4 divisors (see below), whose sum is σ = 266389216368. Its totient is φ = 264371115720.

The previous prime is 265380166039. The next prime is 265380166049. The reversal of 265380166043 is 340661083562.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 265380166043 - 2² = 265380166039 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 265380165985 and 265380166003.

It is not an unprimeable number, because it can be changed into a prime (265380166049) 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, 504524768 + ... + 504525293.

It is an arithmetic number, because the mean of its divisors is an integer number (66597304092).

Almost surely, 2^265380166043 is an apocalyptic number.

265380166043 is a deficient number, since it is larger than the sum of its proper divisors (1009050325).

265380166043 is a wasteful number, since it uses less digits than its factorization.

265380166043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1009050324.

The product of its (nonzero) digits is 622080, while the sum is 44.

The spelling of 265380166043 in words is "two hundred sixty-five billion, three hundred eighty million, one hundred sixty-six thousand, forty-three".