265166503145 has 8 divisors (see below), whose sum is σ = 318560989320. Its totient is φ = 211892412160.

The previous prime is 265166503127. The next prime is 265166503153. The reversal of 265166503145 is 541305661562.

It can be written as a sum of positive squares in 4 ways, for example, as 5804458969 + 259362044176 = 76187^2 + 509276^2 .

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

It is not a de Polignac number, because 265166503145 - 2¹⁸ = 265166241001 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 265166503096 and 265166503105.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30093950 + ... + 30102759.

It is an arithmetic number, because the mean of its divisors is an integer number (39820123665).

Almost surely, 2^265166503145 is an apocalyptic number.

It is an amenable number.

265166503145 is a deficient number, since it is larger than the sum of its proper divisors (53394486175).

265166503145 is an equidigital number, since it uses as much as digits as its factorization.

265166503145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60197595.

The product of its (nonzero) digits is 648000, while the sum is 44.

The spelling of 265166503145 in words is "two hundred sixty-five billion, one hundred sixty-six million, five hundred three thousand, one hundred forty-five".