265256646141 has 4 divisors (see below), whose sum is σ = 353675528192. Its totient is φ = 176837764092.

The previous prime is 265256646139. The next prime is 265256646173. The reversal of 265256646141 is 141646652562.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 265256646141 - 2¹ = 265256646139 is a prime.

It is a super-2 number, since 2×265256646141² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (265256646101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44209441021 + ... + 44209441026.

It is an arithmetic number, because the mean of its divisors is an integer number (88418882048).

Almost surely, 2^265256646141 is an apocalyptic number.

It is an amenable number.

265256646141 is a deficient number, since it is larger than the sum of its proper divisors (88418882051).

265256646141 is an equidigital number, since it uses as much as digits as its factorization.

265256646141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88418882050.

The product of its digits is 2073600, while the sum is 48.

The spelling of 265256646141 in words is "two hundred sixty-five billion, two hundred fifty-six million, six hundred forty-six thousand, one hundred forty-one".